Given the following decision table: Inspect given test cases and expected results and EXPLAIN whether they are valid or invalid.

	Rule1	Rule2	Rule3	Rule4
Conditions
Age	<21yrs	21-29yrs	30-50yrs	>50yrs
Insurance Class	A	A or B	B,C or D	C or D
Actions
Premium	100TL	90TL	70TL	70TL
Excess	2500TL	2500TL	500TL	1000TL

A. 23 year old in insurance class A Premium is 90 and excess is 2500.

B. 51 year old in insurance class C Premium is 70 and excess is 500.

C. 31 year old in insurance class B Premium is 90 and excess is 2500.

D. 43 year old in insurance class C Premium is 90 and excess is 1000