${\mathrm{PCl}}_5$ will have trigonal bypiramidal geometry with five sigma bond pairs and zero lone pairs.

The total number of $\mathrm{\sigma }$ and $\mathrm{\pi }-$bonds present in the following compound are

Given below are two statements.

Statement I: The presence of weaker $\mathrm{\pi }$-bonds make alkenes less stable than alkanes

Statement II: The strength of the double bond is greater than that of carbon-carbon single bond.

In the light of the above statements, choose the correct answer from the options : given below.