5*3^n

A.15,30,45,60***
B.5,15,45,135
C.0,15,45,135
D.15,45,135,405

To solve the expression 5*3^n, you need to substitute different values for n and then calculate the result. Let's try substituting n with different values and evaluate the expression:

For n = 0:
5*3^0 = 5*1 = 5

For n = 1:
5*3^1 = 5*3 = 15

For n = 2:
5*3^2 = 5*9 = 45

For n = 3:
5*3^3 = 5*27 = 135

Therefore, the correct option is:

C.0, 15, 45, 135