Which Response Has the Correct Number of Significant Figures and Units

Multiple Choice

Which response has the correct number of significant figures and units for the following mathematical operation?

A) 2.192 $\times$ 10^-5 J/cal
B) 2 $\times$ 10^-5 kcal
C) 2.192 $\times$ 10^-5 kcal
D) 2.19 $\times$ 10^-5 kcal
E) 2.2 $\times$ 10^-5 kcal