Consider the following statements :
1. Every natural number is a real number.
2. Every real number is a rational number.
3. Every integer is a real number.
4. Every rational number is a real number.
Which of the above statements are correct?

Options

A. 1, 2 and 3
B. 1, 3 and 4
C. 2 and 3 only
D. 3 and 4 only