Given the Isotope Chlorine-38, determine which of the following statements
are correct.

1. It has an atomic mass of 35 amu.
2. There are 17 protons in the nucleus of its atom.
3. There are 21 electrons in the nucleus of its atom.
4. There are 21 neutrons in the nucleus of its atom.
5. It has an atomic number of 17.


A. All are correct
B. only 1 and 2
C. only 2, 4 and 5
D. only 1
E. only 2 and 5