assuming that the final rejection of the Petitioner's application, is on the ground that the application for exemption, in view of Section 91-A cannot be granted retrospectively as stated in the communication dated 18/05/2013 of the State Government. The fact remains that for the period 01/04/2009 to 09/02/2012 the application, even if considered today, would have to be considered on the touchstone of Section 91-A. In so far as the said provision is concerned, it only states that any notification granting exemption may be issued so as to take effect prospectively. There is nothing in the said provision i.e. Section 91-A which states that same applies with retrospective effect. The fact that the said provision has come into force and the Petitioner's application for the said period would undoubtedly have to be considered today, would mean that the Petitioner's applications would have to be considered having regard to Section 91-A. The question which arises is whether the Petitioner could be granted exemption with retrospective effect. The answer has to be in the negative in view of the clear language of Section 91-A which directs that any notification granting exemption would only take effect prospectively.