Given the following pseudocode, what value of GRADENUM must be input to output a grade of “C”?

```
Start
Read GRADENUM
CASENTRY GRADENUM
CASE 90 ? GRADENUM ? 100
GRADE = “A’
CASE 80 ? GRADENUM < 90
GRADE = “B’
CASE 70 ? GRADENUM < 80
GRADE = “C’
CASE 60 ? GRADENUM < 70
GRADE = “D’
CASE other
GRADE = “F”
ENDCASE
Write GRADE
Stop

```

a) 70 or more
b) 79 or less
c) 80 or less
d) none of the above

d) none of the above

Computer Science & Information Technology

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