China Developed a Machine Which can Destroy Satellite in the Space

Current Context: Researchers from China have developed a microwave machine named “Relativistic Klystron Amplifier (RKA)” which can destroy or jam satellites in space.

• This device can generate a wave burst of 5MW in the Ka-band which is usually used for both civil and military purposes.
• In spite of the fact that not sufficient to shoot targets out of the sky from the ground, the RKA can be mounted onto satellites, which may at that point be utilized to assault adversary resources in space by burning out their touchy hardware.
• Directed Energy Weapons (DEW) is a framework that utilizes concentrated electromagnetic energy instead of motor energy to harm or crush equipment and/or workforce in physical strife.

Question: 

Q.1 Which country has recently developed the machine which can destroy the satellites in space?
a. United States
b. Russia
c. Ukraine
d. China