The C - C - C Bond Angles in Octane $\degree$

The C - C - C bond angles in octane CH₃CH₂CH₂CH₂CH₂CH₂CH₂CH₃) are all

A) 180 $\degree$ .
B) 120 $\degree$ .
C) 90 $\degree$ .
D) 109.5 $\degree$ .
E) 60 $\degree$ .