John was teaching his students about the basics of computer hardware and software. by the end of his lecture, he asked his class to state the basic function that a computer’s control unit performs. four students answered gave four different answers. george said a) that a control unit performs arithmetical and logical computations. alex mentioned b)that it stores the data for computations. helen stated c)that it coordinates the flow of instructions and data within computers. lastly, myron suggested d)that it displays results of computations.
which one is it?

Acolor class has three public, integer-returning accessor methods: getred, getgreen, and getblue, and three protected, void-returning mutator methods: setred, setgreen, setblue, each of which accepts an integer parameter and assigns it to the corresponding color component. the class, alphachannelcolor-- a subclass of color-- has an integer instance variable, alpha, containing the alpha channel value, representing the degree of transparency of the color. alphachannelcolor also has a method named dissolve (void-returning, and no parameters), that causes the color to fade a bit. it does this by incrementing (by 1) all three color components (using the above accessor and mutator methods) as well as the alpha component value. write the dissolve method.