Which of the following represents the value of the series below? (I need someone to double-check the answer I got)

S{28}=sum {k=1}^{28} (9k-4)

S{28}=3542

Answer Choices:

A: S{28}=28{5+248}/{2}

S[28}=3542

B. S{28}=(9(28)-4)+(9(1)-4)

S{28}=253

C. S{28}=28(5+248)

S{28}=7084

D. S{28}=28(248-5)/{2})

S{28}=3402

Hence, A is the answer.

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