Explanation:

 1. The sarod is an adaptation of the Afghan rabab, which arrived in India during the 16th century. The modern form of the instrument was designed in the 19th century.

 2.  A sitar can have 18, 19, 20, or 21 strings. The conventional sarod is a 17 to 25-stringed lute-like instrument — four to five main strings used for playing the melody, one or two drone strings, two chikari strings and nine to eleven sympathetic strings.

  3. Third statement is incorrect, For sitar, a mezrab (plectrum) is worn on the finger of a sitar player. It is a plectrum made by hand from a continuous strand of iron used to strike the strings of the sitar.