Which of the following carbocation will undergo rarrangement ?

Options

A.
B.
C. `CH_(3)-underset(CH_(3))underset(|)CH -C^(o+)=O`
D. `CH_(3)-NH-^(o+)CH-underset(CH_(3))underset(|)Ch-CH_(3)`

Answer

b

Explanation

For each carbocation rerrangement there must be some driving force.
carbocation rearranges only when more carbocation is formed .