General electronic configuration of lanthanides is

Question

( A ) $(n – 2) f ^{1–14} (n – 1) s^2p^6d^{0–1} ns^2$
( B ) $(n – 2) d^{0–1} (n – 1) f ^{1–14 } ns^2$
( C ) $(n – 2) f ^{ 10–14} (n – 1) d^{0–1} ns^2$
( D ) $(n – 2) f ^{ 0–14}(n – 1) d^{10} ns^2$