Solve the Problem $1.8$ And Then Add 32 to the Result $F$

Solve the problem.
-To convert a temperature from degrees Celsius to degrees Fahrenheit, you multiply the temperature in degrees Celsius by $1.8$ and then add 32 to the result. Express $F$ as a linear function of $c$ .

A) $F ( c ) = 1.8 + 32 c$
B) $\mathrm { F } ( \mathrm { c } ) = 1.8 \mathrm { c } + 32$
C) $\mathrm { F } ( \mathrm { c } ) = \frac { \mathrm { c } - 32 } { 1.8 }$
D) $\mathrm { F } ( \mathrm { c } ) = 33.8 \mathrm { c }$