please ANSWER BOTH PARTS . in PERL IDE

Modifying Exercise: (Computer-Assisted Instruction: Reducing Student Fatigue) One problem in CAI environments is student fatigue. This can be reduced by varying the computer's responses to hold the student's attention, so that various comments are displayed for each answer as follows: Possible responses to a correct answer: Very good! Excellent! Nice work! Keep up the good work! Possible responses to an incorrect answer: No. Please try again. Wrong. Try once more. Don't give up! No. Keep trying. Use random- number generation to choose a number from 1 to 4 that will be used to select one of the four appropriate responses to each correct or incorrect answer. Use a switch or if statement to issue the responses. Modifying Exercise (Computer- Assisted Instruction: Monitoring Student Performance) More sophisticated computer-assisted instruction systems monitor the student's performance over a period of time. Count the number of correct and incorrect responses typed by the student. After the student types 10 answers, your program should calculate the percentages that are correct. If the percentage is lower than 75%. display "Please ask your leacher for extra belp. ll, then reset the program so another student can try it. If the percentage is 75% or ligher display Congratulations, you are ready to go to the next level!" then reset the program so another student can try to