Which statement is true about an Apex class?
A class cannot be disabled for profiles.
An inner class can be nested at multiple levels.
Static methods can only be declared in a top-level class definition.
The default access modifier for methods in a class is public.

A.
Static methods can only be declared in a top-level class definition.

B.
Utilize the String.escapeSingleQuotes(string) method

C.
HTTP class, HTTPRequesL class, HTTPRsponse class

D.
Database class method