Assume an array is declared as follows. Which of the following statements correctly assigns the value 100 to each of the array elements?
int[] num = new int[4];
a. for(x = 0; x < 3; ++x) num[x] = 100;
b. for(x = 0; x < 4; ++x) num[x] = 100;
c. for(x = 1; x < 4; ++x) num[x] = 100;
d. for(x = 1; x < 5; ++x) num[x] = 100;