In a Tools Rental Business, a Form Is Used to Reserve

In a tools rental business, a form is used to reserve large construction tools for customers (i.e. subcontractors working for a construction company) . The following fields appear on the form:
(tool information)
Item#
Type
Descr
Size
Cost/Day
Mfg (Tool manufacturer)
MfgAddr (Manufacturer address)
Mfg phone
(Customer and reservation information)
rental# (rental order number for the tool, unique for a given tool)
CustId
CustName
CustAddress
CustPhone
Checkout_date (future date for a future reservation or past date for a current rental)
Days (Expected length of rental)
ConsName (Construction Company Name)
ConsAddr (Construction Company Address)
Discount (specific to a construction company)

-The structure of the form is:

A) Parent node X, child node Y
B) Parent node X, two child nodes Y and Z
C) Parent node X, node Y child to node X and parent to child node Z
D) Nodes X and Y, both parent to child node Z