Which are true regarding expressions and statements?

Both can manipulate values

Statements do not produce values, but rather produce actions or effects

Functions can only have statements, not expressions

Expressions produce $($evaulate to$)$ values

Python only allows assignment in assignment statements

Which of the following are true statements regarding literals and variables?

Both are values

Both are entities

Variables contain values but literals$$are values

Variable contain values but literals represent, or denote, values

Variables can be named but literals cannot

What are the cases of a Swift optional called?

of and nil

some and none

success and failure

of and empty