According to Jains, the number of Gandhars of Sumtinath Tirthankar was 100. Gandhars are a type of celestial being who are said to live in the heavens. They are often depicted as beautiful and graceful creatures who sing and dance. In Jainism, Gandhars are said to be attendants of the Tirthankaras, who are the spiritual teachers of Jainism. The Tirthankaras are said to have 100 Gandhars each, who serve them and help them in their work.
The option A, 50, is incorrect because it is not the number of Gandhars that are said to be associated with Sumtinath Tirthankar. The option B, 100, is correct because it is the number of Gandhars that are said to be associated with Sumtinath Tirthankar. The option C, 150, is incorrect because it is not the number of Gandhars that are said to be associated with Sumtinath Tirthankar. The option D, 200, is incorrect because it is not the number of Gandhars that are said to be associated with Sumtinath Tirthankar.