Use the Binomial Theorem to Expand and Simplify the Expression $( \sqrt { x } + 7 ) ^ { 3 }$

Multiple Choice

Use the Binomial Theorem to expand and simplify the expression.​ $( \sqrt { x } + 7 ) ^ { 3 }$ ​

A) $x ^ { 3 / 2 } + 21 x + 147 x ^ { 2 } + 343$
B) $x ^ { 3 / 2 } + 21 x - 147 x ^ { 1 / 2 } + 343$
C) $x ^ { 3 } + 21 x + 147 x ^ { 1 / 2 } + 343$
D) $x ^ { 3 } + 21 x ^ { 2 } + 147 x + 343$
E) $x ^ { 3 / 2 } + 21 x + 147 x ^ { 1 / 2 } + 343$