He further added: "...By the end of this week, we expect to be able to take the key decisions... All the legal options that are on the table at this point."
The government is said to be toying with the idea of making a Presidential Reference on the issue if it decides not to file a review petition.
The government has one month from the date of the apex court judgement (February 2) to file a review petition and Chandrashekhar said a decision will be taken before that.