(A)  bond angle is less than the normal tetrahedral bond angle.
(R) Lone pair-lone pair repulsion decreases bond angle.

Both ‘A’ and ‘R’ are true and ‘R’ is the correct explanation of ‘A’.

‘A’ is false and ‘R’ is false

Both ‘A’ and ‘R’ are true and ‘R’ is not the correct explanation of ‘A’

‘A’ is true and ‘R’ is false