Which of the following statements are correct. Answer on the basis of figure :

Options

A. The two bridged hydrogen atoms and the two boron atoms lie in one plane
B. Out of six `B-H` bonds, two bonds can be described in terms of 3-centre 2-electron bonds
C. Out of six `B-H` bonds, four `B-H` bonds can be described in terms of 3-centre 2-electron bonds
D. The four terminal `B-H` bonds are 2-centre 2-electron regular bonds