How can a developer display data from the parent record on the page?

A Visualforce page has a standard controller for an object that has a lookup relationship to a parent object.

How can a developer display data from the parent record on the page?
A . By adding a second standard controller to the page for the parent record.
B . By using a roll-up formula field on the child record to include data from the parent record.
C . By using SOQL on the Visualforce page to query for data from the parent record.
D . By using merge field syntax to retrieve data from the parent record.

Answer: D