Write an Expression for the Area and Simplify Your Answer $40 x ^ { 2 } - 41 x + 21$

Multiple Choice

Write an expression for the area and simplify your answer.
[The figure is not necessarily drawn to scale]

A) $40 x ^ { 2 } - 41 x + 21$
B) $40 x ^ { 2 } + 21$
C) $40 x ^ { 2 } - 71 x + 21$
D) $40 x ^ { 2 } + 71 x + 21$