In computer science, different number bases are chosen for their specific advantages in data representation. Hexadecimal (base-16) is often used as a compact shorthand for binary (base-2) data.
Which option correctly states the exact number of bits represented by a single hexadecimal digit, and the hexadecimal representation of the denary (decimal) value 18110181_{10}18110?
4 bits and B516\text{B5}_{16}B516
4 bits and 5B165\text{B}_{16}5B16
8 bits and B516\text{B5}_{16}B516
4 bits and A516\text{A5}_{16}A516