The difference between a resource and a capability is:

A$.$ A resource is a productive input or competitive asset, while a capability is the capacity of the firm to perform some internal activity competently.

B$.$ A resource is a reserve supply or back$-$up supply function, whereas a capability is the ability to manage the resource function.

C$.$ A resource is a mechanism used for carrying out some responsibility, while a capability possesses the qualities needed to do a particular thing.

D$.$ A resource is the firm's fixed assets, while a capability defines whether the firm is competent to perform some function.

E$.$ all of the above