(1) For the purposes of this Chapter, classification of taxable services shall be determined according to the terms of the sub-clauses of clause (104) of section 65;

(2) When for any reason, a taxable service is, prima facie, classifiable under two or more sub-clauses of clause (104) of Section 65, classification shall be effected as follows;

(a) the sub-clause which provides the most specific description shall be preferred to sub-clauses providing a more general description;

(b) composite services consisting of a combination of different services which cannot be classified in the manner specified in clause (a), shall be classified as if they consisted of a service which gives them their essential character, in so far as this criterion is applicable;

(c) when a service cannot be classified in the manner specified in clause (a) or clause (b), it shall be classified under the sub-clause which occurs first among the sub-clauses which equally merit consideration;

(3) The provisions of this section shall not apply with effect from such date as the Central Government may, by notification, appoint.