6. Which of the following code should be included in every C program? (a) main (b) #include (C) /* (d) 7. Which of the following statement will print a number only if it is an even number? (a) if (n%2==1 ) printf("%d",n); (b) if (n%2==0) printf("%d",n); (c) if (n != 0 ) printf("%d",n); (d) if(n== 0 ) printf("%d",n); 8. Which of the following statements correctly prints "Passed"If the student's grade is greater than or equal to 60 and "Failed" if the student's grade is less than 60? (a) printf("%s ", grade >= 60: "Passed": "Failed"); (b) grade >= 60 : puts("Passed") ? puts("Failed"); (c) printf("%s ". grade >= 60 ? "Passed" : "Falled"); (d) grade >= 60 ? puts("Passed") ? puts("Failed"); LG