What type of video surveillance is typically used by banks, casinos, airports, and military installations, and commonly employs guards who actively monitor the surveillance?

Which of the following code fragments gives a random double value between 2 and 5 inclusive? You can assume that the random number seed has been set and any needed definitions and initializations have been made.

a) 3.0*rand() + 2 b) 3.0*(RAND_MAX-rand())/RAND_MAX + 2 c) ((RAND_MAX-rand())/static_cast(RAND_MAX))*3 + 2 d) (RAND_MAX-rand())/static_cast(RAND_MAX)*5 -2 e) rand()/static_cast(RAND_MAX)*2 + 3

Which of the following is a product characteristic that can be trademarked?

A. sounds B. shapes C. colors D. All of the above