**Core Concept**
Low Molecular Weight Heparin (LMWH) is an anticoagulant that works by inhibiting Factor Xa and thrombin (Factor IIa) in the coagulation cascade. The anticoagulant effect of LMWH is difficult to reverse, but it can be reversed if necessary in life-threatening situations.

**Why the Correct Answer is Right**
The next step in managing a patient on LMWH who develops hemorrhage is to administer Protamine sulfate, an antidote that binds to LMWH and neutralizes its anticoagulant effect. Protamine sulfate binds to the sulfated groups of LMWH, forming a stable complex that is then excreted by the kidneys. This rapid reversal of anticoagulation is critical in preventing further bleeding.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Fresh Frozen Plasma (FFP) is not an effective antidote for LMWH. FFP contains all the clotting factors, but it does not specifically reverse the anticoagulant effect of LMWH.
**Option B:** This option is incorrect because Vitamin K is used to reverse warfarin-induced anticoagulation, not LMWH. Warfarin works by inhibiting the production of vitamin K-dependent clotting factors, and vitamin K can be used to restore these factors.
**Option C:** This option is incorrect because the patient's LMWH dose should not be increased to manage hemorrhage. Increasing the dose of LMWH would exacerbate the anticoagulant effect, leading to more severe bleeding.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that Protamine sulfate is the antidote for LMWH, but it's not effective for other anticoagulants like warfarin or direct oral anticoagulants (DOACs). Each anticoagulant has its specific antidote, and reversing the anticoagulation effect is crucial in managing life-threatening bleeding.

**Correct Answer:** C. Stop LMWH.