Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-The 3rd term in the expansion of $( 7 x + 9 ) ^ { 3 }$

A) $3,402 x$
B) $1,323 x ^ { 2 }$
C) $1,701 \mathrm { x }$
D) 81