The correct option is: (b)
Explanation:
The position taken up by a third group entering the ring depends on the nature of the two groups already present.
When both groups show o-and p-directing nature, the directive power of each group is generally in the following order :
O- > NH2 > NR2 > OH > OMe > NHAc > Me >X
In case of compound A
the arrows are used to indicate the possible positions that may be taken up by an incoming group.
Due to presence of bulky group, steric effect works, and the favourable product will be this.