The sequence is defined recursively. Write the first four terms.a1 = y; an = an-1 + S
A. a1 = y, a2 = S, a3 = 2S, a4 = 3S
B. a1 = S, a2 = S + y, a3 = S + 2y, a4 = S + 3y
C. a1 = y, a2 = y + S, a3 = y + 2S, a4 = y + 3S
D. a1 = y, a2 = y - S, a3 = y - 2S, a4 = y - 3S
Answer: C
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