$p$ will be

Which one of the following is the most stable carbocation?

Arrange the following carbocations in increasing order of stability:

The number of hyperconjugation structures involved to stabilize the carbocation formed in the above reaction is $.............$.

Among the following carbocations:
$(I)$ $Ph_{2}\stackrel{+}{C} CH_{2} Me$
$(II)$ $Ph CH_{2} CH_{2} \stackrel{+}{C} HPh$
$(III)$ $Ph_{2} CH \stackrel{+}{C} HMe$
$(IV)$ $Ph_{2} C(Me) \stackrel{+}{C} H_{2}$
The order of stability is:

The hybridization of the positively charged carbon and the negatively charged carbon in the following structures are respectively: