Statement -1 If `alpha`is the unit cell length of a cubic lattice, the atomic radius is `(alpha)/(2)` for a simple cubic cell `(sqrt(2a)/(4)` for a body centered cubic cell, and `(sqrt(2a)/(4)` face- centered cell
Statement -2 From a knowledge of the dimensions of the unit cell and Avogadro's number we can calculate the crystal density

Options

A. Statement -1 is True, Statement -2 is true : Statement -2 is a correct explanation for Statement -22
B. Statement -1 is True, Statement -2 is True , Statement -2 is NOT a correct explanation for Statement -22
C. Trapped eletrons
D. Statement -1 and Statement -2 both are False