Choose the missing terms out of the given alternatives : C, Z, F, X, I, V, L, T, O, ?, ?

Answer: Option C

The given sequence is a combination of two series:
I: C, F, I, L, O and
II: Z, X, V, T, ?
The pattern in I is :C + 3 F + 3 I + 3 L + 3 O + 3 R
The pattern in II is: Z - 2 X - 2 V - 2 T - 2 R