Where does the urinogenital duct open in the case of frogs?

Where does the urinogenital duct open in the case of frogs?
A. Kidneys
B. Cloaca
C. Urinary bladder
D. Testis

Answer:
B. Cloaca

Explanation:
Two ureters emerge from the kidneys in male frogs. The ureters act as a urinogenital duct which opens into the cloaca. In females the ureters and oviduct separately in the cloaca.