Write the first four terms of the sequence defined by the formula."a" subscript k is equal to k dividing by the quantity 15 k for every integer k > 1. Question 1 options: a) 1/15, 2/15, 3/15, 4/15 b) 1/16, 2/16, 3/16, 4/16 c) 1/16, 2/17, 1/6, 4/19 d) 15, 16, 17, 18