The correct options are
A Pandit Gopal
B Pandit Brij Lal
C Moulavi Qutb-ul-Din
Guru Nanak Ji was exceptionally sharp and self-aware during his childhood. He learned to read in Devanagari and mastered Maths under Pandit Gopal at his Patashala. He also studied Sanskrit under Pandit Brij Lal and Persian under Moulavi Qutb-ul-Din. As per the Janamsakhis of Guru Nanak Ji, he often asked many questions and made the pundits think deeply.