Concept:
The historical transmission of Indian classical percussion happens through the sacred *Guru-Shishya Parampara* (teacher-disciple lineage). Documenting the verified professional disciples of legendary masters like Ustad Ahmadjaan Thirakwa charts the expansion of specific performance styling schools.
Step 1: Analyze the background of the listed artists.
Ustad Ahmadjaan Thirakwa (1892–1976) was an iconic maestro of the Farrukhabad Gharana who spent many decades teaching percussion across prominent academic institutions and royal centers. Let us evaluate his verified historical disciples:
• Prof. Sudhir Verma: A distinguished academician and performing artist who received intensive training directly under Ustad Ahmadjaan Thirakwa.
• Pandit Madhukar Gurav: A celebrated veteran master from Maharashtra who learned directly from Ustad Ahmadjaan Thirakwa, carrying on his crisp solo presentation style.
Step 2: Isolate the correct option combination.
As items B and C represent verified direct disciples of Ustad Ahmadjaan Thirakwa, the combination "B and C Only" is the correct selection, corresponding to option (2).