(A) 1-propanol & 2-propanol can be distinguished by haloform test
(R) The trihalomethyl group (–CX₃) of 

is a good leaving group for nucleophilic substitution reaction

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