Read the following excerpt from a US court opinion:
```
are “other than a constituent element of a ‘criminal prosecution,’ ” the Court has held that certain constitutional protections afforded in the context of a criminal prosecution (e.g., Fifth Amendment protections of the Double Jeopardy Clause, the Sixth Amendment’s right to counsel, etc.) are inapplicable in proceedings before a grand jury. See id., at 49, 112 S.Ct. 1735 (citing cases). In light of those holdings, and recognizing the historical function of the grand jury as an independent investigatory body which acts as a buffer between the citizenry and government, the Court has been reluctant to measure the enforceability of grand jury subpoenas against the same standards applicable to search warrants. See, e.g., Hale v. Henkel, 201 U.S. 43, 76, 26 S.Ct. 370, 50 L.Ed. 652 (1906) ; United States v. Calandra, 414 U.S. 338, 346,
```
What is the most suitable continuation to the opinion? Your options are:
A. holding that a grand jury subpoena seeking a voice exemplar did not implicate fourth amendment rights but suggesting that even if it had at most the government would have been required to demonstrate that the grand jury subpoena was reasonable
B. holding that while a grand jury subpoena for the production of books and papers may implicate the fourth amendment when presented with a challenge to such a subpoena a court need only determine whether the request is far too sweeping in its terms to be regarded as reasonable
C. holding that taxpayer who is the target but not the recipient of an administrative subpoena pursuant to 26 usc  7602 may challenge the subpoena
D. holding that the term timely should be read in conjunction with 45c2b that requires a party subject to a subpoena to object to a subpoena duces tecum within 14 days of service of the subpoena
E. holding that because a grand jury subpoena issued through normal channels is presumed to be reasonable  the burden of showing unreasonableness must be on the subpoena recipient who seeks to avoid compliance but recognizing that a court may be justified under some circumstances in requiring the government to reveal the general subject of the grand jurys investigation before requiring the challenging party to carry its burden of persuasion
Reply with [A, B, C, D, E] only.