Which of the following works was NOT written by Kalidasa?

Mudrarakshasa was written by Vishakhadatta, not Kalidasa. Kalidasa’s accepted works include Raghuvamsha, Meghaduta and Vikramorvashiyam. This question belongs to the Gupta and post-Gupta phase, a period reconstructed through inscriptions, coins, monuments, literary works, scientific texts and accounts of foreign travellers. The Gupta age is often described as a classical or golden age because of important achievements in Sanskrit literature, temple architecture, sculpture, astronomy and mathematics, but the label should not conceal regional diversity or social and political change. The remaining options are all securely associated with Kalidasa, so they cannot answer a NOT-written question.