Which electronic configuration corresponds to an element of group III-A of the Periodic Table?

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6 + 3 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

Which electronic configuration corresponds to an element of group III-A of the Periodic Table?

2p6,3s2,3p6,4s6

1s2,2s2,2p6,3s2,3p1

1s2,2s2,2p6,3s2,3p3

1s2,2s2,2p6