Convert to Celsius $\mathrm{C}=\frac{5}{9}(\mathrm{~F}-32)$ Or $\mathrm{C}=\frac{\mathrm{F}-32}{1.8}$ Round Your Answer to the Nearest Tenth If Necessary

Multiple Choice

Convert to Celsius. Use the formula $\mathrm{C}=\frac{5}{9}(\mathrm{~F}-32)$ or $\mathrm{C}=\frac{\mathrm{F}-32}{1.8}$ . Round your answer to the nearest tenth if necessary.
- $21^{\circ} \mathrm{F}$

A) $69.8^{\circ} \mathrm{C}$
B) $-6.1^{\circ} \mathrm{C}$
C) $20.3^{\circ} \mathrm{C}$
D) $5.8^{\circ} \mathrm{C}$