Why is it best to run av scans when the computer isn���t being utilized?
a. the scans consume resources and can impede computer performance.
b. executable files can���t be scanned if a user is using them within an application.
c. the windows directory can���t be scanned if the computer is being used.
d. av applications can only do full scans if the computer is in safe mode.

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.