Which classes are least likely to be marked Serializable. (Choose two.)

A. A class that monitors the state of every thread in the application.

B. A class that holds data about the amount of rain that has fallen in a given year

C. A class that manages the memory of running processes in an application.

D. A class that stores information about apples in an orchard.

E. A class that tracks the amount of candy in a gumball machine.

F. A class that tracks which users have logged in.