Which of the Following Statements Is Not True About Propyne $\mathrm { HC } \equiv \mathrm { C } - \mathrm { CH } _ { 3 }$

Which of the following statements is not true about propyne $\mathrm { HC } \equiv \mathrm { C } - \mathrm { CH } _ { 3 }$ ?

A) It contains six sigma bonds.
B) It contains three pi bonds.
C) The $\mathrm { H } - \mathrm { C } - \mathrm { H }$ bond angle is about $109.5 ^ { \circ }$
D) The $\mathrm { C } - \mathrm { C } - \mathrm { C }$ bond angle is $180 ^ { \circ } .$
E) The pi bond is weaker than the sigma bond.