Consider four online bookstores based on the delivery time and the number of genres they cater to$.$ The options are:

Bookstore A: $3$ days delivery time, $15$ genres

Bookstore B: $2$ days delivery time, $18$ genres

Bookstore $C$ : $5$ days delivery time, $20$ genres

Bookstore D: $4$ days delivery time, $17$ genres

Which bookstore is Pareto dominated by all other bookstores?

Bookstore B

Bookstore D

Bookstore A

Bookstore C