Write the Phrase as a Variable Expression $x - 5 \frac { 9 } { 10 }$

Multiple Choice

Write the phrase as a variable expression. Use x to represent "a number."
-A number less than five and nine-tenths

A) $x - 5 \frac { 9 } { 10 }$
B) $5 \frac { 9 } { 10 } - x$
C) $5 \frac { 9 } { 10 } x$
D) $x + 5 \frac { 9 } { 10 }$