M8 k=1 сos лk Let ak > 0 represent the magnitude of the terms of the given series. Identify and describe ak. Select the correct choice below and fill in any answer box in your choice. OA. ak = OB. ak = O C. = Evaluate lim ak- k→∞0 lim ak = k→∞ is nondecreasing in magnitude for k greater than some index N. and for any index N, there are some values of k> N for which ak + 1 ≥ak and some values of k> N for which ak +1 ≤ak. is nonincreasing in magnitude for k greater than some index N. Choose the correct answer below. (...) The series converges. The series diverges.

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