Section 92 Patents Act 1970 (NOTIFICATIONS) gives the Central Government power to notify compulsory licences in CIRCUMSTANCES OF:

1. Section 92(1) Patents Act 1970: 'If the Central Government is satisfied, in respect of any patent in force in circumstances of national emergency or in circumstances of extreme urgency or in case of public non-commercial use, that it is necessary that compulsory licences should be granted at any time after the sealing thereof to work the invention, it may make a declaration to that effect, by notification in the Official Gazette, and thereupon the following provisions shall have effect, that is to say — (i) the Controller shall on application made at any time after the notification by any person interested grant to the applicant a licence under the patent on such terms and conditions as he thinks fit; (ii) in settling the terms and conditions of a licence granted under this section, the Controller shall endeavour to secure that the articles manufactured under the patent shall be available to the public at the lowest prices consistent with the patentees deriving a reasonable advantage from their patent rights.' 2. Hence option B is correct. _Source: Patents Act 1970 / Copyright Act 1957 / Trade Marks Act 1999 — Patents Act 1970, Section 92_