Which of the following is the correct order of first ionization enthalpy for Ai, Si, P, S, Cl.\ (A) Af $<$ Si $<$ P $<$ S $<$ Cl\ (B) Cl $<$ S $<$ P $<$ Si $<$ Ai\ (C) Al $<$ Si $<$ S $<$ P $<$ Cl\ (D) Si $<$ Ai $<$ S $<$ P $<$ Cl
Which of the following is the correct order of first ionization enthalpy for Ai, Si, P, S, Cl.\
(A) Af $<$ Si $<$ P $<$ S $<$ Cl\
(B) Cl $<$ S $<$ P $<$ Si $<$ Ai\
(C) Al $<$ Si $<$ S $<$ P $<$ Cl\
(D) Si $<$ Ai $<$ S $<$ P $<$ Cl