Consider this program. Which score represents a corner case that should be tested?

score $=70$

if score $>90$ and score $<=100$:

print$(\text{'}$You got an A$!$ Congrats!$\text{'})$

elif score $>80$ and score $<=90$:

print$(\text{'}$You got a B$!$ Well done!$\text{'})$

elif score $>70$ and score $<=80$:

print$(\text{'}$You got a C$.\text{'})$

else:

print$("$You did not pass the exam."$)$

$95$

$80$

$60$

$75$