A Battery Is Manufactured to Have an Emf of 24 $\varOmega$

Multiple Choice

A battery is manufactured to have an emf of 24.0 V, but the terminal voltage is only 22.0 V when the battery is connected across a 10.0- $\varOmega$ resistor. What is the internal resistance of the battery?

A) 3.9 $\varOmega$
B) 0.46 $\varOmega$
C) 1.2 $\varOmega$
D) 0.91 $\varOmega$
E) 0.68 $\varOmega$