In the functional dependency shown below, which is the determinant?

Select one:

a. Phone, because each person will have a unique phone number.

b. CustomerLastName, because it cannot solely be the primary key.

c. CustomerNumber, because all of the other dependent attributes are determined by it.

d. The arrow symbol, because it means "determines".

e. CustomerLastName and CustomerFirstName because (together) these two attributes comprise uniqueness over an individual.