$1$ Multiple Choice $(25$ Marks$).$

Which of the following best describes a class $($as defined in Java$)?$

$($a$)$ A class is a template$/$description what data to allocate, and operations on that data, that can be stored.

$($b$)$ A class is an allocation of all non$-$static data. All operations can be executed on this data with a reference to the class.

$($c$)$ A class must always contain only static data and methods.

$($d$)$ A class can never be instantiated in Java.

$($e$)$ A class is garbage collection.

Which of the following best describes a data structure?

$($a$)$ A data structure specifies what data is stored and what operations can be executed on that data but not how.

$($b$)$ A data structure specifies exactly how the operations are implemented and exactly how the data is stored.

$($c$)$ A data structure has only static methods and attributes.

$($d$)$ A data structure is protected.

$($e$)$ A data structure is garbage collection.