Convert to Fahrenheit $\mathrm{F}=\frac{9}{5} \mathrm{C}+32$ Or $\mathrm{F}=1.8 \mathrm{C}+32$ Round Your Answer to the Nearest Tenth If Necessary

Convert to Fahrenheit. Use the formula $\mathrm{F}=\frac{9}{5} \mathrm{C}+32$ or $\mathrm{F}=1.8 \mathrm{C}+32$ . Round your answer to the nearest tenth if necessary.
- $81^{\circ} \mathrm{C}$

A) $203.4^{\circ} \mathrm{F}$
B) $177.8^{\circ} \mathrm{F}$
C) $77.0^{\circ} \mathrm{F}$
D) $61.3^{\circ} \mathrm{F}$