manoj and shira asked to find an explicit formula for the sequence -9, -27, -81, -243....


manoj said the formula is h(n) = -9*3^n, and


shira The formula is h(n) =-3*3^n. which one of them is right?


A. Only manoj

B. Only shira

C. Both manoj and shira

D. Neither manoj nor shira