Text vs. code fields

When editing an exercise in the course editor, you will be presented with different fields as shown below.

Screenshot of the course outline in the course editor

Which of the following is TRUE regarding text and code fields?

50 XP

It's possible to write code in a code field, but not in a text field.
press1
It's possible to write Markdown in a text field, but Markdown will not render in a code field.
press2
If you want to use Markdown in a text field, you need to remember the syntax.
press3
It's best to use complete sentences in both text and code fields.
press4