Three Resistors Are Placed in a Circuit as Shown $\varOmega$ B)20 $\varOmega$

Multiple Choice

Three resistors are placed in a circuit as shown. The potential difference between points A and B is 30 V.
-What is the equivalent resistance between the points A and B?

A) 10 $\varOmega$
B) 20 $\varOmega$
C) 30 $\varOmega$
D) 50 $\varOmega$
E) 100 $\varOmega$