Why are metric prefixes such as kilo$-,$ mega$-,$ and giga$-$ not accurate for describing the number of bits?

Question $9$ options:

Computers can only express a maximum of $1,000$ bits.

Numbers of bits are expressed in powers of $2$ whereas kilo$-($thousands$),$ mega$-($millions$),$ giga$-($billions$),$ and so on are expressed in powers of $10.$

Only physical quantities can be expressed in metric units.

A bit can take on more than two possible values.