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

How to diagnose lymphoma in boxers
Pay attention to swollen lymph nodes.
Swelling lymph nodes is one of the most recognizable symptoms for lymphoma. Swollen lymph nodes are most often noticed when the owner is petting the dog.

Select from: (a). If you see swelling or the dog is having a hard time restraining himself from going home, it may be a sign of lymphoma. Swelling can be caused by fluid trapped under a valve or pituitary edema, which is also known as mucus inside the intestinal artery.. (b). Swollen lymph nodes are usually small (about 4-6 millimeters) in diameter, about 1/8th of an inch in diameter. They are located on the feet, abdomen, and genital area.. (c). The two most common places you may find them are under the jaw and behind the knee. Lymph nodes that can be felt through the skin are paired, left and right.. (d). Coagulation of an inflamed lymph node, often due to bacteria or viruses, can produce swollen lymph nodes. Intravenous fluid is also commonly seen in swollen lymph nodes..
(c).