Apex is available in which Salesforce Editions? (Select all that apply)

The system method, ___________, lets you write test methods that change user contexts to either
an existing user or a new user.

The system method, System.runAs(), lets you write test methods that change user contexts to
either an existing user or a new user.

The System.runAs() functionality can be used to test and verify proper data sharing and data
access. However, System.runAs() does NOT validate CRUD or Field Level Security permissions.

A developer can use optional catch statements for any exception type in a try-catch block.

However, the general exception type, ‘Exception’, must only be used by the last catch() block.
EXAMPLE:
try{
// Some risky code.
}
catch(SomeExceptionType e){
// Handle one exception type.
}
catch(SomeOtherExceptionType e){
// Handle another exception type.
}
catch(Exception e){
// This must be the last catch block.
}
~|~
(Select all that apply)