Action potential test

Why the answer’s not B?
(It’s A)

I think its A, because the irritability is increased which means the nerve fibre is more easily “disturbed”, so even a weak stimulus will cause a response. Btw where do you get these questions from?

So if the stimulus increased the answer would be B?
Idk it was asked in a group

Hmm… Stronger stimuli do not increase the size of the action potential, but cause more action potentials to be sent (higher frequency), so probably the answer would be B in that case.