**Core Concept**
Postpartum hemorrhage (PPH) is a leading cause of maternal mortality worldwide, characterized by excessive bleeding following childbirth. Effective management involves both pharmacological and non-pharmacological interventions to stabilize the patient and control bleeding.

**Why the Correct Answer is Right**
The primary goal in treating PPH is to promptly stabilize the patient and control bleeding. Various pharmacological agents are used for this purpose, including oxytocin, ergot alkaloids (e.g., ergometrine), and prostaglandin analogs. Oxytocin is often the first-line agent due to its rapid onset of action and efficacy in inducing uterine contractions.

**Why Each Wrong Option is Incorrect**
**Option A:** While ergot alkaloids like ergometrine are used in PPH, this option is not the exception. Ergometrine is a potent uterotonic agent used to induce sustained uterine contractions.
**Option B:** Prostaglandin analogs, such as carboprost tromethamine, are used in PPH, particularly in cases resistant to oxytocin and ergot alkaloids. This option is not the correct exception.
**Option C:** This option is missing.

**Clinical Pearl / High-Yield Fact**
When managing PPH, it's crucial to remember the "4 Ts" mnemonic: Tone (uterine atony), Tissue (retained placental tissue), Trauma (uterine or cervical trauma), and Thrombin (coagulopathy).

**Correct Answer:** D.