The correct answer is (d).
Kalidasa was a Sanskrit poet and dramatist who lived in the 5th century CE. He is considered one of the greatest writers in the Sanskrit language. His works include the plays AbhijñÄnaÅÄkuntalam (The Recognition of Shakuntala), Vikramorvasiyam (The Hero and the Heroine), and MÄlavikÄgnimitram (MÄlavikÄ and Agnimitra); and the poems Raghuvamsa (The Dynasty of Raghu) and KumÄrasambhava (The Birth of the Kumara).
Bhasa was a Sanskrit playwright who lived in the 2nd or 3rd century CE. He is considered one of the earliest and most important Sanskrit playwrights. His works include the plays Svapna Vasavadattam (The Dream of Vasavadatta), Pratima Natak (The Drama of the Image), and Charudatta (The Good Man).
Subandhu was a Sanskrit writer who lived in the 5th century CE. He is best known for his novel Kadambari (The Camphor Girl). Kadambari is considered one of the earliest and most important Sanskrit novels.
Harsha was a Sanskrit poet and dramatist who lived in the 7th century CE. He is considered one of the greatest writers in the Sanskrit language. His works include the plays Ratnavali (The Jeweled Necklace), Priyadarsika (The Beloved), and Nagananda (The Delight of the Serpents).
The play Ratnavali is not written by Kalidasa.