The electronic configuration of aluminium is:

Explanation:

The atomic number of aluminium is 13.

Thus, the total number of electron in the element is 13.

The first shell i.e. K-shell has a capacity of 2 electrons, the second shell i.e. L-shell has a capacity of 8 electron, and the third shell will occupy the remaining electron i.e. 3 electrons.

Thus, option (A) is correct.

Final Answer:

Hence, option (A) is correct.