ISRO launched RH-560 Sounding Rocket

Current Context: The Indian Space Research Organisation (ISRO) has launched a sounding rocket named RH-560 from Satish Dhawan Space Centre, Sriharikota Range.

• The RH-560 was particularly launched to study attitudinal variations in the neutral winds and plasma dynamics.
• The RH-560 are one or two-stage solid propellant rockets which are used for probing the upper atmospheric regions and to perform space research activities.
• They will also be used as platforms to test the prototypes of new components or subsystems which are to be used in the launch of vehicles and satellites.
• Static Part: 
• HQ of ISRO: Bengaluru
• Chairman of ISRO: K Sivan

Question: 

Q.1 What is the name of the sounding rocket which was launched by ISRO in March 2021 to study attitudinal variations in the neutral winds and plasma dynamics?
a. GISAT-455
b. RH-560
c. RISAT-J2
d. EMISAT-1C