An arithmetic sequence is defined by the recursive formula t1 = 11, tn = tn - 1 - 13, where n ∈n and n > 1. which of these is the general term of the sequence? a) tn = 11 - 13(n - 1), where n ∈n and n > 1 b) tn = 11 - 13(n - 2), where n ∈n and n ≥ 1 c) tn = 11 - 13(n - 1), where n ∈n and n ≥ 1 d) tn = 11 - 13(n + 1), where n ∈n and n ≥ 1