Read the Following Passage and Answer the Accompanying Questions

Multiple Choice

Read the following passage and answer the accompanying questions. Rupture of the cruciate ligament is a common injury to the stifle joint of dogs. The cranial cruciate ligament is more commonly ruptured than the caudal ligament. Rupture of either cruciate ligament may be accompanied by rupture of the medial collateral ligament and damage to the medial meniscus. Acute lameness is the most common sign of a cruciate ligament rupture, which will decrease in severity over time. Chronic lameness and osteoarthritis may result if the stifle joint is not stabilized via surgery. The primary sign of a cruciate ligament rupture is:

A) a tear in the caudal cruciate ligament
B) a tear in the cranial cruciate ligament
C) acute lameness
D) anorexia