121. (1) A person who is appointed, elected or otherwise selected to an office established by or under this Constitution may resign from that office by writing under his hand addressed to the person or authority by whom he was appointed, elected or otherwise selected:

Provided that -

(i) the resignation of a person from the office of President shall be addressed to the National Assembly;

(ii) the resignation of a person from the office of Speaker or Deputy Speaker of the National Assembly shall be addressed to the Assembly;

(iii) the resignation of a person from the office of member of the National Assembly or from the office of chairman or member of a committee of the National Assembly shall be addressed to the Speaker of the Assembly.

(2) The resignation of a person from an office as aforesaid shall take effect when the writing signifying the resignation is received by the person or authority to whom it is addressed or a person authorized by that person or authority to receive it.