A person who is obliged to deduct withholding tax but fails to deduct, or having deducted, fails to remit on the due date, shall be guilty of an offence and liable to a penalty of _________ per annum of the tax withheld or not remitted, as the case may be:
A. 25%
B. 21%
C. 15%
D. 10%
E. 5%

D. 10%

Explanation:
According to Nigerian tax laws, any person who is required to deduct withholding tax but fails to deduct or remit on the due date is liable to a penalty of 10% per annum of the amount of tax not deducted or remitted. This is to ensure compliance and timely remittance of withheld taxes.