The correct answer is B. 1, 2 and 3.
Iktara, khanjari, and chimta are all instruments that are used in swang performances. Shehnai is not an instrument that is used in swang performances.
Iktara is a stringed instrument that is played with a plectrum. It is made of a wooden frame with two strings, and it is played by plucking the strings with the fingers. Iktara is a popular instrument in North India, and it is used in a variety of genres of music, including swang.
Khanjari is a small drum that is played with the hands. It is made of a wooden frame with a skin stretched over it, and it is played by striking the skin with the hands. Khanjari is a popular instrument in North India, and it is used in a variety of genres of music, including swang.
Chimta is a small pair of cymbals that are played by striking them together. They are made of metal, and they are played by striking them together with the hands. Chimta is a popular instrument in North India, and it is used in a variety of genres of music, including swang.
Shehnai is a long, double-reed wind instrument that is played with a mouthpiece. It is made of wood, and it is played by blowing air through the mouthpiece and vibrating the reeds. Shehnai is a popular instrument in North India, and it is used in a variety of genres of music, including classical music. However, it is not an instrument that is used in swang performances.