In an interview, you are asked to compare the following statements regarding different authentication concepts and identify the correct statement. Which of the following statements is correct?

Question $37$ options:

a$)$

Physiological biometrics is relating to the way in which the mind functions.

b$)$

A person's vein can be used to uniquely authenticate an individual.

c$)$

A HMAC$-$based one$-$time password $($HOTP$)$ changes after a set period of time.

d$)$

A windowed token displays a static code.