Given the Following Pseudocode,what Value of GRADE Will Be Output $90 \leq$

Given the following pseudocode,what value of GRADE will be output if 60 is input?
Start
Read GRADENUM
CASENTRY GRADENUM
CASE $90 \leq$ GRADENUM $\leq 100$ GRADE $=$ "A'
CASE $80 \leq$ GRADENUM $< 90$ GRADE = 'B'
CASE $70 \leq$ GRADENUM $< 80$ GRADE = "C'
CASE $60 \leq$ GRADENUM $< 70$ GRADE $=$ 'D'
CASE other
GRADE = "F"
ENDCASE
Write GRADE
Stop

A) B
B) C
C) D
D) F