If pa+qb+rc=1pa+qb+rc=1 and ap+bq+cr=0ap+bq+cr=0 where a, b, c, p, q, – McqOptions

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1.	If pa+qb+rc=1pa+qb+rc=1 and ap+bq+cr=0ap+bq+cr=0 where a, b, c, p, q, r are non-zero real numbers, then p2a2+q2b2+r2c2p2a2+q2b2+r2c2 is equal to = ?
A.	0
B.	1
C.	3
D.	9
Answer» B. 1

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