The following are some statements related to VA group hydrides
I) Reducing property increases from `NH_(3)` to `BiH_(3)`
II) Tendency to donate lone pair decreases from `NH_(3)` to `BiH_(3)`
III) Ease of replacing H with `Cl` decreases from `NH_(3)` to `BiH_(3)`
IV) Ease of formation of hydrides decreases from `NH_(3)` to `BiH_(3)`
The correct statement are
A. I,II,III,IV
B. I,III and IV
C. I, II and IV
D. I and IV
