Find the product of\[\left( p\text{ }+\text{ }q\text{ }+\text{ }r \right)\text{ }[\text{ }{{\left( p\text{ }-\text{ }q \right)}^{2}}+{{\left( q\text{ }-\text{ }r \right)}^{2}}+\text{ }{{\left( r\text{ }-\text{ }p \right)}^{2}}]\].

• A. \[{{p}^{3}}+{{q}^{3}}+{{r}^{3}}\] 
• B. \[{{p}^{3}}\text{ }+\text{ }{{q}^{3}}\text{ }+\text{ }{{r}^{3}}\text{ }\,3pqr\]
• C. \[2\text{ }\left( {{p}^{3}}\text{ }+\text{ }{{q}^{3}}+{{r}^{3}}\text{ }-\text{ }3pqr \right)\]       
• D. \[{{p}^{3}}\text{ }+\text{ }{{q}^{3}}+\,\,{{r}^{3}}+\,\,2\text{ }\left( pq\,\,+\,\,qr\,\,+\,\,rp \right)\]
• E. None of these