Part A Which of the following recursive functions defines the sequence described above?

A
f(1)=−18f(n)=4f(n+1), n>1f\left(1\right)=-18\newline f\left(n\right)=4f\left(n+1\right), \ n>1f(1)=−18
f(n)=4f(n+1), n>1
B
f(1)=−18f(n)=4+f(n+1), n>1f\left(1\right)=-18\newline f\left(n\right)=4+f\left(n+1\right) ,\ n>1f(1)=−18
f(n)=4+f(n+1), n>1
C
f(1)=−18f(n)=4+f(n−1), n>1f\left(1\right)=-18\newline f\left(n\right)=4+f\left(n-1\right) ,\ n>1f(1)=−18
f(n)=4+f(n−1), n>1
D
f(1)=−18f(n)=4f(n−1),n>1f\left(1 \right)=-18\newline f\left(n\right)=4f\left(n-1\right), n>1f(1)=−18
f(n)=4f(n−1),n>1