Option b is the correct answer. Amir Khusrau was a famous musician and he is believed to have invented the Tabla. Khusrau is credited for the invention of the sitar and tabla. He instructed to develop a more melodic percussion instrument that could accompany the new style of music called Khayal. To develop this music Khayal the new musical instrument Tabla was invented by him . It is used in Hindustani classical music.