The number of atoms per unit cell and the number of slip systems

The number of atoms per unit cell and the number of slip systems

Q. The number of atoms per unit cell and the number of slip systems, respectively, for a face- centered cubic (FCC) crystal are

(A) 3, 3                       (B) 3, 12                     (C) 4, 12                    (D) 4, 48

Ans: 4, 12

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