Explanation:

Mathura School
The Mathura School flourished on the banks of the river Yamuna in the period between 1st and 3rd centuries B.C. The sculptures of the Mathura School were influenced by the stories and imageries of all three religions of the time – Buddhism, Hinduism and Jainism. The images were modelled on the earlier Yaksha images found during the Mauryan period. The Mathura School showed a striking use of symbolism in the images. The Hindu Gods were represented using their avayudhas. For example, Shiva is shown through linga and mukhalinga. Similarly, the halo around the head of Buddha is larger than in Gandhara School and decorated with geometrical patterns. Hence, statement 2 is incorrect.
Buddha is shown to be surrounded by two Bodhisattavas – Padmapani holding a lotus and Vajrapani holding a thunderbolt.

The sculptures of Mathura School were made using spotted red sandstone.
Buddha is shown in delighted mood with a smiling face. The body symbolizes masculinity, wearing tight dress. The face and head are shaven. Buddha is seated in padmasana with different mudras and his face reflects grace. A similar protuberance is shown on the head.