Which of the following is the complete factorization of 343p3−8q3?
(7p−2q)(49p2+14pq+4q2)
(7p+2q)(49p2−14pq+4q2)
(7p−2q)(49p2−14pq+4q2)
(7p−2q)(7p2+14pq+2q2)