(A) Space or crystal lattice differ in symmetry of the arrangement of points. (R) `n lambda.=2 dsin theta` is known as Bragg's equation

Options

A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B. Both (A) and (R) are true and (R) is not the correct explanation of (A)
C. (A) is true but (R) is false
D. Both (A) and (R) are false

Answer

B