kindly solve the 3 parts of this question

... 12. a) Part of a program that reads a positive integer from the user, counts how many divisors that number has, and then it prints the result is shown below. 1. Scanner stdin = new Scanner(System.in); // Create the Scanner. 2. int N; // A positive integer entered by the user. Divisors of this number will be counted. 3. System.out.print("Enter a positive integer: "); 4. 5. int testDivisor; // A number between 1 and N that is a possible divisor of N. 6. int divisorCount;// Number of divisors of N that have been found. 7. divisorCount = 0; 8. for (............ 9. if (............. ..) 10. 11. } } 13. System.out.println(..... ...........); Write down the instructions that should be present at lines 4,8,9,10 and 13 in the above program. 15 marks] (b) A sub-routine called Packetize() takes as input an array of bits called Binary of size 1xN and divides it into R packets of size P. It then outputs a two dimensional array called Packets of size RxP. The sub-routine is called as follows from the main program: Packets = Packetize(Binary, N, P); Write down the codes for this sub-routine, assuming that the number of bits N entered must always be divisible by the packet size P. [8 marks) (c) (i) Explain the purpose of the 'throws' keyword in Java. [2 marks] Consider the program below which prints the sum of two numbers if the first one is even