Which three conditions will combine to produce a Navigation Trap when the focus is in FIELD1 and the user presses the [Next Item] key?

You write a form in which there are two text items (FIELD 1 and FIELD2) and a button (BTN1) arranged in the following sequence:
FIELD1,
BTN2,
FIELD2
Which three conditions will combine to produce a Navigation Trap when the focus is in FIELD1 and the user presses the [Next Item] key? (Choose three)

A.
FIELD1 has a Post-Text-Item trigger that fails.

B.
FIELD1 has a Pre-Text-Item trigger that fails.

C.
FIELD1 has a When-New-Item-Instance trigger that fails.

D.
FIELD2 has a Post-Text-Item trigger that fails.

E.
FIELD2 has a Pre-Text-Item trigger that fails.

F.
FIELD2 has a When-New-Item-Instance trigger that fails.

G.
The Keyboard Navigable property of BTN1 is set to No.

H.
The Keyboard Navigable property of BTN1 is set to Yes.