Find the potential difference across R2 and the current through R2

There's a picture of a square. At the top of the square is 16V on the left side is V3=10V R3. on the right side of the square is R1 V1=4V I1=6A. on the bottom it says R2

A) potential dofference = 6 V. Current = 18 A
B) potential difference = 6V. Current = 6 A
C) potential difference = 2V. Current = 2 A
D) potential difference = 2V. Current = 6 A

im taking the test rn and i literally have no clue. PLZ HELP SOMEBODY