Opposition BJP is considering whether to refer the raging controversy over the CD, which purportedly contains objectionable contents concerning Congress spokesperson Abhishek Singhvi, to a parliamentary committee during the second half of the budget session that begins from April 24. Singhvi represents his party in the Rajya Sabha. BJP sources said that the party would consult other opposition parties, before taking a call on getting the CD examined by a parliamentary ethics or privilege committee.