A) B) C) What is the output of the following code? int main() string city Name La Jolla cout city Name.at(3); return 0; Select one: O a. a O b. space O c. J O d. What is the value assigned to variable zfor the following code, assuming the initial values of a 2, b 2, and c 50? mult 0; while (a 20) mult b al if (mult c) break; a a 1 Select one: O a.. 10 O b. 20 O c. 50 O d. 100 What is the clock in a computer? Select one: O a. The doubling of IC capacity roughly every 18 months O b. The frequency a processor executes instructions. O c. Manages programs and interfaces with peripherals O d. Relatively small volatile storage with fastest access located in processor chip