If a table is in "third normal form $(3$NF$),"$ it means that it is in

a$.$ second normal form $(2$NF$)$ and has no transitive dependencies

b$.$ first normal form $(1$NF$)$ and all secondary keys depend on the entire primary key

c$.$ first normal form $(1$NF$)$ and has no transitive dependencies

d$.$ second normal form $(2$NF$)$ and has no repeating groups

e$.$ first normal form $($INF$)$ and has three secondary keys