Which of the following correctly detect a grade?

if grade $>60$:

print$("$D$")$

elif grade $>=70$:

print$("$C$")$

elif grade $>=80$:

print$("$B$")$

elif grade $>=90$:

print$("$A$")$

else:

print$("$F$")$

if grade $>=90$:

print$("$A$")$

elif grade $>=80$:

print$("$B$")$

elif grade $>=70$:

print$("$C$")$

elif grade $>=60$:

print$("$D$")$

else:

print$("$F$")$

if grade $<60$:

print$("$F$")$

elif grade $<70$:

print$("$D$")$

elif grade $<80$:

print$("$C$")$

elif grade $<90$:

print$("$B$")$

else:

print$("$A$")$

if grade $>=90$:

print$("$A$")$

elif $80<=$ grade $<90$:

print$("$B$")$

elif $70<=$ grade $<80$:

print$("$C$")$

elif $60<=$ grade $<70$:

print$("$D$")$

elif grade $<60$:

print$("$F$")$