With which instrument do the sisters Lalita and Nandini identify?

Correct option is B

Lalita and Nandini are internationally acclaimed violin maestros who have been widely applauded as the `Queens of Violin'.
Popularly known as the `VIOLIN SISTERS', these outstanding musicians have enthralled audiences with their spell-binding music and have been acclaimed as the “ONLY FEMALE DUO IN ASIA to perform the World music, South Indian Classical, Fusion and Western Classical music”.
 Mandolin: A mandolin is a stringed instrument that is similar to a violin, but it has a smaller body and shorter strings.
 Violin: A violin is a stringed instrument that is played by drawing a bow across the strings.
 Sarod: A sarod is a stringed instrument that is played with a pick. It is a traditional Indian instrument and is often used in classical Indian music.
 Flute: A flute is a wind instrument that is played by blowing into a hole in the side of the instrument.