Read the following excerpt from a US court opinion:
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on the part of the lessee to do this can only be an implied one, in which instance said lessee has a reasonable time, after completion of the well, to comply with such covenant. Id. at 1012 (quoting McVicker v. Horn, Robinson and Nathan, 322 P.2d 410, 411 (Okla.1958)). Gazin held that, although the lessors would normally have the right to demand compliance with the implied covenant to market in the primary term, the acceptance of delay rental payments operated as a waiver of that right. Id. The diligence of the lessee’s efforts and the reasonable probability of success are factors to be taken into consideration when determining what is a “reasonable time.” Flag Oil Corp. v. King Resources Co., 494 P.2d 322, 325 (Okla.1972). See also Brimmer v. Union Oil Co., 81 F.2d 437 (10th Cir.) , cert. denied, 298 U.S. 668, 56 S.Ct. 833, 80
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What is the most suitable continuation to the opinion? Your options are:
A. recognizing implied duty to market
B. recognizing implied obligation to use reasonable diligence
C. holding that a contract for an exclusive agency to market a product contains an implied promise to use all reasonable efforts to market the product
D. recognizing implied covenant to market gas
E. recognizing an implied fourth amendment action for damages
Reply with [A, B, C, D, E] only.