Dr. Jones says an atom has 3 electrons in the first shell and four electrons in the second shell. Someone should tell Dr. Jones that...

A) the second shell should have 8 electrons.
B) the second shell can't have 4 electrons.
C) no shell can hold more than 2 electrons.
D) the first shell must fill before the second shell can have electrons.
the first shell shouldn't have 3 electrons.