The major product (P) of the given reaction is

(where, Me is $$-$$CH₃)

Match List-I with List-II.

	List-I		List-II
(A)		I.	$$B{r_2}$$ in $$C{S_2}$$
(B)		II.	$$N{a_2}C{r_2}{O_7}/{H_2}S{O_4}$$
(C)		III.	$$Zn$$
(D)		IV.	$$CHC{l_3}/NaOH$$

Choose the correct answer from the options given below :

Consider the above reaction sequence and identify the product B.

In the given reaction

'A' can be