Assertion (A) : X- rays are used in radiation therapy to shrink cancerous tumours
Reason (R ) : X- rays are used to cure cancer.

Options

A. (R ) is correct but ( A) is wrong
B. (A) is correct and (R ) explains (A)
C. (A) is correct (R ) is wrong
D. Both (A) and (R ) is correct

Answer

C