Another way to remember collagen deficiencies is via "SCAB":
Type 1 - Skin
Type 2 - Connective Tissue
Type 3 - Arteries
Type 4 - Basement membrane
You can logic it out that's it type 3, because they have problems with arterial rupture and possible rupture of their ascending aorta.
If I was just looking at the classifications by type and didn't know the deficiency, I would guess it would be type 1, since the classical sign is stretchy skin, but alas, I'd be wrong.
Also some what related with collagen deficiency disorders, they can ask a tricky type of question like a problem with the aqueous humor. That would be considered a type 2 "connective tissue" problem.