What Is the Approximate C-C-C Bond Angle in Propene, CH₃CH=CH₂ $\circ$

What is the approximate C-C-C bond angle in propene, CH₃CH=CH₂?

A) 90 ^$\circ$
B) 109 ^$\circ$
C) 120 ^$\circ$
D) 180 ^$\circ$