Assertion (A) : Unsatured organic com pounds undergo substitution reactions. Reason (R) : Unsaturated organic compounds contain` = or-= `bonds.

Options

A. Both ‘A’ and R’ are true and ‘R’ is the correct explanation of ‘A
B. Both ‘A’ and ‘R’ are true but ‘R’ does not the correct explanation of ‘A’.
C. ‘A’ is true but ‘R’ is false
D. A is false but R’ is true