A) \[(p-q+1)({{p}^{2}}+{{q}^{2}}-pq)\]
B) \[(p+q-1)({{p}^{2}}+{{q}^{2}}+1-pq+q+p)\]
C) \[{{(p-1)}^{3}}(p+q)\]
D) \[{{(p-1)}^{3}}(p-q)\]
E) None of these
Correct Answer: B
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