Which of the following is not correct IP address?

Question $11$Answer

a$.$

$101\mathrm{.}2\mathrm{.}2\mathrm{.}25/14$

b$.$

none of the choices

c$.$

$172\mathrm{.}10\mathrm{.}180\mathrm{.}80/26$

d$.$

$117\mathrm{.}66\mathrm{.}31\mathrm{.}50/22$

e$.$

$100\mathrm{.}200\mathrm{.}20/22$