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What is wrong with the following code?

float scores[10], total; a. Cannot declare regular and array variables together. b. Arrays must be integers c. The 10 should be replaced with a variable name, whose value is input from the user d. Nothing.

Every JComponent has an instance variable called that enables the object to maintain references to all its registered listeners.

a. registeredListenerList b. listenerList c. registeredList d. eventListenerList