A public class method may be invoked after which of the following occurs? (java programming) 1) The class is defined.

2) The main method is defined.

3) All instance variables are assigned.

4) An instance of the class is created.

5) The instance methods are invoked.

Be sure to answer all parts. synthesize the following compound from benzene. a. b. c. d. e. f. reaction [1] conditions: a b c d e f reaction [1] product: draw structure reaction [2] conditions: a b c d e f reaction [2] product: draw structure reaction [3] conditions: a b c d e f reaction [3] product: