Identify the Atomic Orbitals in the C-C Sigma $\sigma$ )Bond in Ethyne,H-C≡C-H

Identify the atomic orbitals in the C-C sigma ( $\sigma$ ) bond in ethyne,H-C≡C-H.

A) (sp²,sp²)
B) (sp³,sp³)
C) (sp,sp)
D) (p,p)
E) (sp,s)