How can these requirements be met?

Universal Containers wants to capture business sector information on a lead and display the information on the account and contact once the lead has been converted.

How can these requirements be met?
A . Create a custom field on the Lead and Account objects and configure mapping of these two fields for conversion. Create a custom formula field on the Account object to pull the value from the Contact object.
B . Create a custom field on the Lead and Account objects. Create a custom formula field on the Contact object to pull the value from the Account object.
C . Create a custom field on the Lead, Account, and Contact objects and configure mapping of these two fields for conversion. Use a trigger to update the Contact field with the Account value.
D . Create a custom field on the Lead and Account objects and configure mapping of these two fields for conversion. Create a custom formula field on the Contact object to pull the value from the Account object.

Answer: D