Identify the odd one out amongst the following numbers:

Select one:

A$.17$ base $10$

B$.11$ base $16$

C$.21$ base $8$

D$.10001$ base $2$

E$.19$ base $8$The slot time for Fast Ethernet is:

Select one:

A$.512$ microseconds

B$.51\mathrm{.}2$ microseconds

C$.5\mathrm{.}12$ microseconds

D$.0\mathrm{.}512$ microseconds