Find how many times the string "I am a. hero will be printed in each of the following code fragments; show all the details of calculations. The answer in each case must be the function of the parameter n. (a) for i=0ton for j=0 ton print "I am a hero (b) fori=0 ton for j=i ton print I am a hero (c) i=0 while i<3*n print I Am a hero i=i+3