I believe the correct answer is A) 6
this is the answer of your question .
<em>Hope</em><em> </em><em>it</em><em> </em><em>helped </em><em>you</em>
There you go , This is my work i have did on that subject area
The Bohr atomic model, relying on quantum mechanics, built upon the Rutherford model to explain the orbits of electrons.