The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is?

The ratio of neutrons to protons of an element having a mass number an

1.	The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is?
A.	4
B.	3
C.	2
D.	1
Answer» E.