Exam PL-400 topic 3 question 21 discussion

You have the following code:

You have a contact record that uses the GUID 991bf2fd-d40c-4752-9984-26b7c0455b69.
You need to assign the contact record as the primary contact for an account when you create the account.
Which two code segments can you use? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.