[A]: Gene therapy has been employed to correct certain diseases like combined immune deficiency syndrome (SCIO).
[R]: Gene therapy can be applied to certain specific diseases.

Options

A. (a) If both A and R are true and R is the correct explanation of A
B. (b) If both A and R are true but R is not the correct explanation of A
C. (c) If A is true and R is false
D. (d) If both A and R are false

Answer

B