Choose which group of sets the following number belongs to. Be sure to account for ALL sets.

Question

2/5

A. Real numbers, rational numbers.
B. Real numbers, irrational numbers.
C. Rational numbers, natural numbers, integers.
D. Irrational numbers, natural numbers.

Answer 1

There is also a letter "E" that I just realized isn't there

"irrational​ numbers, natural numbers"

Answer 2

natural numbers are the counting numbers (whole numbers)

2/5 is expressed as the ratio of two integers ... rational

Answer 3

Choose which group of sets the following number belongs to. Be sure to account for ALL sets.
-6

Answer 4

-5/8