Eight boys B1, B2, B3, B4, B5, B6, B7 and B8 are sitting around a circular table facing opposite to the centre (not necessarily in the same order). B1 is third to the right of B3. B5 is second to the left of B3. B2 is fourth to the right of B4. B4 is second to the right of B1. B8 is third to the left of B6. B6 is not the immediate neighbour of B1. Who is third to right of B7?

A

B3

B

B5

C

B7

D

B4