For the ER diagram below, which of these statements is correct? Check all that apply.

erd$-$a$-$b$.$jpg

A row in B is linked to at most n rows in A$,$ where n is the number of rows in A$.$

All rows in B are linked to exactly one row in A$.$

Every row in B is linked to at least one row in A$.$

There are rows in A that are not linked to a row in B$.$

All rows in A are linked to at most one row in B$.$