The fact that services cannot be stored for later use or sale is evidence of their ?

A. Pigouvian taxes, command-and-control policies, tradable pollution permits.
B. tradable pollution permits, Pigouvian taxes, command-and-control policies
C. tradable pollution permits command-and-control policies, Pigovian taxes.
D. command-and-control policies, tradable pollution permits, Pigovian taxes.
E. They would all rank equally high because the same result can be obtained from any one of the policies