Taylor Manages a Database for a Regional Hardware Enterprise with 10

Multiple Choice

Taylor manages a database for a regional hardware enterprise with 10 stores in 2 states.  The hardware store wholesales to contractors.The database includes these tables (among others) : tblContractor,tblProducts,tblBilling,tblInvoices.
-Taylor has added the tables tblContractor,tblBilling,and tblInvoices to the relationships window.He has created a relationship between the tblBilling and tblContractor based on the ContractorID field.What type of relationship is this?

A) one-to-one
B) one-to-many
C) many-to-many
D) one-to-none