Anal incontinence | Medical PG Preparations

Anal incontinence will result from division of 

A. The first sacral nerve roots bilaterally 
B. The second sacral nerve roots bilaterally 
C. The third sacral nerve roots bilaterally 
D. The fourth sacral nerve roots bilaterally

Ans. C.  The third sacral nerve roots bilaterally

Destruction of all four sacral nerve roots on one side should not produce incontinence, but the division of both third sacral nerve roots leads to incontinence