According to “Hare’s Adventure”, how does he get his “burnt buttocks” ?

According to “Hare’s Adventure”, how does he get his “burnt buttocks” ?

A. His buttocks was scorched by the sun which he had caught in a trap
B. Grandmother burned him with a hot poker for being so mischievous
C. Hare caught his own tale on fire trying to cook himself some dinner
D. He was born that way