The nucleus of a nitrogen atom contains 7 neutrons and 7 protons.Which of the following is a correct statement concerning nitrogen?

A)The nitrogen atom has a mass number of approximately 7 daltons and an atomic mass of 14.
B)The nitrogen atom has a mass number of approximately 14 daltons and an atomic mass of 7.
C)The nitrogen atom has a mass number of 14 and an atomic mass of 7 grams.
D)The nitrogen atom has a mass number of 7 and an atomic number of 14.
E)The nitrogen atom has a mass number of 14 and an atomic mass of approximately 14 daltons.