Specify the coordination geometry around and the hybridisation of `N` and `B` atoms in `1 : 1` complex of `BF_(3)` and `NH_(3)`.
A. `N` : tetrahedral, `sp^(3) , B` : tetrahedral, `sp^(3)`
B. `N` : pyramidal, `sp^(3) , B` : pyramidal, `sp^(3)`
C. `N` : pyramidal, `sp^(3) , B` : palnar, `sp^(3)`
D. `N` : pyramidal, `sp^(3) , B` : tetrabedral, `sp^(3)`.
