**Core Concept**
The management of carcinoma of the left colon with acute obstruction involves a thorough assessment of the patient's condition, considering the risk of perforation and the need for rapid decompression. This condition requires a multidisciplinary approach, often involving surgical intervention, to relieve the obstruction and prevent complications.

**Why the Correct Answer is Right**
The primary goal in managing acute left colon obstruction is to promptly relieve the obstruction and restore bowel function. This is typically achieved through emergency surgery, such as a left hemicolectomy, which involves the removal of the affected segment of the colon. The procedure may also involve a colostomy to divert fecal matter away from the affected area. In some cases, a staged approach involving initial endoscopic decompression followed by elective surgery may be considered.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not address the need for emergency surgical intervention in the setting of acute obstruction.
**Option B:** This option is incorrect as it does not account for the high risk of perforation associated with left colon obstruction.
**Option C:** This option is incorrect as it does not provide a clear plan for addressing the obstruction and restoring bowel function.

**Clinical Pearl / High-Yield Fact**
In the management of left colon obstruction, the timing of surgical intervention is critical, as delays can increase the risk of complications, including perforation and sepsis. A quick and decisive approach to surgery is essential in these cases.

**Correct Answer: B. Emergency surgery with left hemicolectomy**