Sanghabhuti, an Indian Buddhist monk, who travelled to China at the end of the fourth century AD, was the author of a commentary on :

1. A

   Prajnaparamita Sutra

   Prajnaparamita Sutra. Perfection-of-wisdom corpus; not Sanghabhuti’s known commentary.

2. B

   Visuddhimagga

   Visuddhimagga. Buddhaghosa’s Pali path-manual, centuries later in Sri Lanka.

3. C

   Sarvastivada Vinaya

   Sarvastivada Vinaya. Sanghabhuti (end of 4th century) commented on this vinaya in China.

4. D

   Lalitavistara

   Lalitavistara. A Buddha-biography sutra, not his vinaya commentary.

Summary. Official key is (c) Sarvastivada Vinaya. Chinese tradition records Sanghabhuti, an Indian monk who reached China in the late 4th century, as a commentator on the Sarvastivada monastic code. Visuddhimagga and Lalitavistara are different genres and authors.