Each of the Following Is True About Lesions of the Extensor

Each of the following is true about lesions of the extensor tendons of the wrist and hand except:

A) A mallet finger is a lesion of the extensor mechanism of the DIP joint and is managed nonoperatively with splinting in full extension.
B) A lesion of the central tendon (central slip) of the extensor hood;if untreated,it results in a PIP flexion contracture and boutonnière deformity over time.
C) If a tendon lesion occurs in zone V,PIP and DIP extension is disrupted,but MCP extension remains intact.
D) A laceration of the extensor tendons in zone VII can cause a wrist flexion deformity and requires surgery to repair the lesion.