Use a Special Product Pattern to Find the Product $( 7 x + 1 ) ^ { 2 }$

Multiple Choice

Use a special product pattern to find the product $( 7 x + 1 ) ^ { 2 }$ .

A) $49 x ^ { 2 } - 1$
B) $49 x ^ { 2 } + 16 x + 1$
C) $49 x ^ { 2 } + 1$
D) $49 x ^ { 2 } + 7 x + 1$
E) $49 x ^ { 2 } + 14 x + 1$