Use function notation to write a recursive formula to represent the sequence: 4, 8, 12, …

A.f(n) = f(n − 1) + 4
B.f(n) = f(n − 1) + 2
C.f(n) = f(n − 1) ⋅ 4
D.f(n) = f(n − 1) ⋅ 2