5B. (1) The members specified in clause (i) of section 5A shall hold office for a period of three years from the date of their nomination: Provided that such members may resign their membership in writing addressed to the Chairman. (2) A person shall cease to be a member, if he-(a) dies; or(b) being a member specified in clause (i) of section 5A-(i) resigns his membership under the provision to sub-section (1) of this section; or(ii) his tenure expires under sub-section (1) of this section; or (iii) remains absent, without permission of the Chairman, from three consecutive meetings of the Board; or(c) is declared by a competent Court to be of unsound mind; or (d) is an undischarged insolvent; or(e) has been, on conviction for a criminal offence involving moral turpitude, sentenced to imprisonment for a term of not less than three months or to a fine not less than five thousand taka and unless a period of two years has elapsed since his release or realisation of the fine, as the case may be, a person so sentenced shall not be eligible to be a member.]