Write an Algebraic Expression for the Quantity $\frac { 3 } { 4 } - x$

Multiple Choice

Write an algebraic expression for the quantity. Let x represent the unknown value.
-Three-fourths of a quantity.

A) $\frac { 3 } { 4 } - x$
B) $x - \frac { 3 } { 4 }$
C) $\frac { 3 x } { 4 }$
D) $\frac { 3 } { 4 } + x$