Which of the following statement is true for Lanthanides?

14 elements in the sixth period (Atomic number 90 to 103) that are filling 4f subshell.

14 elements in the sixth period (Atomic number 58 to 71) that are filling 4f subshell.

14 elements in the seventh period (Atomic number 90 to 103) that are filling 5f subshell.

14 elements in the seventh period (Atomic number 58 to 71) that are filling 4f subshell.