Which one of the following books was authored by Harshavardhana?

Which one of the following books was authored by Harshavardhana?

Harshacharita
Kadambari
Ratnavali
Gitagovinda
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UPSC CAPF – 2022
The book authored by Harshavardhana among the given options is Ratnavali.
Harshavardhana, the Pushyabhuti dynasty ruler, is credited with authoring three Sanskrit plays: Ratnavali, Nagananda, and Priyadarshika.
Harshacharita and Kadambari were authored by Banabhatta, who was Harshavardhana’s court poet. Gitagovinda was composed by Jayadeva in the 12th century.