In HTML5, what can you do using the field definition link? There are 2 correct answers to this question.

In HTML5, what can you do using the field definition link? There are 2 correct answers to this question.
A . Hide an extension field form the master template
B . Add an extension field to a form template
C . Add an extension field to the page layout
D . Add an extension field to a data source

Answer: B,D