(1) For the purposes of sub-clause (i) of clause (14) of section 10, prescribed allowances, by whatever name called, shall be the following, namely :—

(a) any allowance granted to meet the cost of travel on tour or on transfer;

(b) any allowance, whether granted on tour or for the period of journey in connection with transfer, to meet the ordinary daily charges incurred by an employee on account of absence from his normal place of duty;

(c.) any allowance granted to meet the expenditure incurred on conveyance in performance of duties of an office or employment of profit :

 Provided that free conveyance is not provided by the employer;