What is the order of increasing energy of the orbitals within a single energy level?

A.     \({\text{d}} < {\text{s}} < {\text{f}} < {\text{p}}\)

B.     \({\text{s}} < {\text{p}} < {\text{d}} < {\text{f}}\)

C.     \({\text{p}} < {\text{s}} < {\text{f}} < {\text{d}}\)

D.     \({\text{f}} < {\text{d}} < {\text{p}} < {\text{s}}\)

B