Read the following excerpt from a US court opinion:
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to demonstrate that he was persecuted or tortured. Although he sought medical attention each time he was released, the BIA reasoned that Arshad did not show he suffered any harm greater than the denial of proper food and sleep, as opposed to cmy food or sleep, consistent with his claim that doctors told him to merely eat well and rest. Although the experiences Ar-shad claims to have suffered are troubling, we are not compelled to disagree with the BIA’s determination that the conditions of his detentions did not rise to the level of severity described in Fatin, for purposes of withholding of removal, or to the level of torture. Likewise, we agree that Arshad’s letter of resignation does not demonstrate past persecution entitling him to withholding of removal. See Li, 400 F.3d at 168 . As the BIA and IJ noted, the letter itself
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What is the most suitable continuation to the opinion? Your options are:
A. holding that the deliberate imposition of severe economic disadvantage  may constitute persecution if it threatens a petitioners life or freedom
B. holding that recidivism may support the imposition of a severe penalty
C. holding that to constitute persecution the harm must be sufficiently severe rising above mere harassment
D. holding that an asylum applicant must show at least a deliberate imposition of a substantial economic disadvantage in order for the harm to constitute economic persecution
E. holding that harm must be sufficiently severe rising above mere harassment to constitute persecution
Reply with [A, B, C, D, E] only.