Multi-select problem: How does the next paragraph end?

How to diagnose osteochondrosis dissecans in rottweilers
Check if your dog appears to have a persistent limp.
One of the key signs of ocd is a persistent limp or lameness in your dog. This is a common symptom in young dogs who have ocd, who may have difficulty putting some or any weight on one leg.

OPTIONS:
A). Healthy dogs that have a limp are more likely to have symptoms like this that are characteristic of ocd. Determine if your dog looks strange or lethargic..
B). The severity of the limp depends on how much damage develops on your dog's joint lining. Your dog may have a mild limp, where he leans to one side and puts less weight on one leg..
C). Your dog may also have a stiff back. Symptoms of ocd generally end up lasting for up to 12 months..
D). Dogs with ocd may appear to be lethargic, slumped over, and listless. The cause of this stiffness is unknown but may vary by dog..
B).