How many bond cleavages are required to convert cubane into a non-cyclic skeleton?

The product $(A)$ of the given reaction is:

How many $\pi$ bonds and $\sigma$ bonds are present in the following molecule?

The conversion of cyclohexene to $HO-(CH_2)_6-OH$ can be achieved by:

Answer the following questions:
$(i)$ Give hybridization of Carbon atoms in the following compound: $CH_3-CH=CH-CH_2-C\equiv CH$
$(ii)$ Give the number of $\sigma$ and $\pi$ bonds in the above compound.
$(iii)$ Give the $IUPAC$ name of the above compound.
$(iv)$ Draw the geometrical isomers of the above compound.
$(v)$ Why are $cis$ and $trans$ isomers not possible in alkynes?
$(vi)$ Which bond possesses more bond length between $C=C$ and $C\equiv C$?

Product $(C)$ of the above reaction is