Match List I with List II :

	List-I		List-II
A.	Microwaves	I.	Radio active decay of the nucleus
B.	Gamma rays	II.	Rapid acceleration and deceleration of electron in aerials
C.	Radio waves	III.	Inner shell electrons
D.	X-rays	IV.	Klystron valve

Choose the correct answer from the options given below:

A Klystron valve or the magnetron valve are generally used for the production of  Microwave.

Gamma radiation takes place from radioactive decay of nucleus.

Radio waves can be produced by rapid acceleration and deceleration of electrons in aerials.

When a solid or gaseous target is bombarded with heavy charged particles, inner shell electrons of target atoms are ionized and characteristic x rays are produced.