Use case extends or include [duplicate]

I have 3 actors: User A, User B and Admin and the use case view photo that is linked with each actors. Now, I want to add a use case add to favourites, and this use case can be activated only by User A.

Should the use case add to favourites extends or include View Photo?The User A goals are view photo and add photo to favourites after view it, if he wants.What is the best solution?