In which normal form are the following relations?

Medication$=\{$code$,$ name$\}$

Distributor$=\{$id$,$ name$\}$

Distribution$=\{$medication$\_$code, distributor$\_$code, date, quantity$\}$

Group of answer choices

The schema is not normalized.

$2$NF

$3$NF

$1$NF