What best describes each of the following variable names?

valid, follows convention: the variable name is allowed by the compiler and also follows appropriate naming conventions for Java variables

valid, does not follow convention: the variable name is valid$-$ it is allowed by the compiler$-$ but it does not follow naming conventions for Java variables

not valid: the variable name is not allowed by the compiler

Note that this question asks about Java variables $($not constants or classes$).$ You can review naming conventions in the Java Coding Conventions

Links to an external site. lecture video.