JEE Main 2020 Chemistry question

In the sixth period, the orbitals that are filled are

• (A)6s, 5f, 6d, 6p
• (B)6s, 6p, 6d, 6f
• (C)6s, 5d, 5f, 6p
• (D)6s, 4f, 5d, 6pCorrect