Which of the following is a valid IP address?

Select one:

a$.$

$199\mathrm{.}212\mathrm{.}55\mathrm{.}5$

b$.$

$199\mathrm{.}212\mathrm{.}55$

c$.$

$199$

d$.$

$199\mathrm{.}212\mathrm{.}55\mathrm{.}5\mathrm{.}10$

e$.$

$199\mathrm{.}212$