If in the WEP challenge$-$response authentication scheme a pseudorandom challenge is reused, what will happen?

a$.$

The attacker may capture all the challenge$-$response pairs used in a WEP challenge$-$response authentication communications.

b$.$

If one of the pseudorandom challenge strings cha is reused, then the attacker Malice may authenticate herself to the wireless network using the corresponding response of cha.

c$.$

None of the above.

d$.$

Both a and b$.$