Consider the following recursive definition of a function f.

f(n) = f(n-1) + f(n-3)

f(1) = f(2) = f(3) = 1

A

f(n) increases faster than 2^n

B

f(n) increases slower than 2^n

C

Both A and D

D

f(n) increases slower than 1.25^n

E

f(n) increases faster than 1.25^n

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