Carbon Dioxide Forms into a Solid (Dry Ice) at Approximately $\degree$

Multiple Choice

Carbon dioxide forms into a solid (dry ice) at approximately -157 $\degree$ F. What temperature in degrees Celsius does this correspond to?

A) "-157 $\degree$ C"
B) "-93 $\degree$ C"
C) "-105 $\degree$ C"
D) "-121 $\degree$ C"