If p3 + q3 + r3 - 3pqr = 4 and a = q + r, b = r + p and c = p + q, the – McqOptions

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1.	If p3 + q3 + r3 - 3pqr = 4 and a = q + r, b = r + p and c = p + q, then what is the value of a3 + b3 + c3 - 3abc?
A.	4
B.	8
C.	2
D.	12
Answer» C. 2

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