4. Class A pensions are pensions as respects which, in the opinion of the Minister for the Civil Service, increases in the emoluments relevant for the purpose of calculating the pensions were deferred during the period beginning with 6th November 1972 and ending with 31st March 1973 in consequence of provisions of the Counter-Inflation (Temporary Provisions) Act 1972, and accordingly paragraph (a) of section 1(2) of the 1974 Act applies to such pensions.