What is unique about Ruby's classes as compared to most other languages, like Java, C$++,$ or C#$.$

Group of answer choices

Ruby's classes do not permit inheritance.

Ruby's classes are dynamic, which allows members to be added, deleted or changed during execution.

Ruby's classes store only static variables, and thus aren't are not object$-$oriented.

Ruby's classes do not allow methods, and are more analogous to C structs.

Ruby doesn't permit private or protected variables.