$5.$ Are the following if statements equivalent? If not, why not?

$(1)$

if $($score $>=90)$

printf$("$A$")$;

else if $($score $>=80)$

printf$("$B$")$;

else if $($score $>=70)$

printf$("$C$")$;

else if $($score $>=60)$

printf$("$D$")$;

else

printf$("$F$")$;

$(2)$

if $($score $<60)$

printf$("$F$")$;

else if $($score $<70)$

printf $("$D$")$;

else if $($score $<80)$

printf$("$C$")$;

else if $($score $<90)$

printf$("$B$")$;

else

printf$("$A$")$;