I need help answering these 3 questions involving OOP:

2.4. Class variables are any field declared with the keyword static. Static variables tell the compiler that there are how many copies of the variable in existence relative to the number of times the class has been instantiated? (a) None regardless of how many instances of the class have been declared (b) One for each instance of the class declared (c) One regardless of how many instances of the class are declared (d) They are constant and cannot be changed (e) None of the above 2.5. A unique aspect of some object-oriented programming languages is not having to explicitly declare a class constructor. This is true with the Java programming language. When instantiating an instance of a class and a class constructor has not been explicitly declared how is the following source code valid? Bicycle bike1new Bicycle); (a) It is not valid (b)The compiler automatically provides a no-argument constructor (c) There would be a compiler error (d) There would be a runtime error (e) It is considered an overloaded method 2.6. An interface body can contain which of the following? (a) Default methods (b) Constant declarations (c) Static methods (d) Abstract methods (e) All of the above