Which Solution Would Be the Most Appropriate Initial Volume Replacement

Which solution would be the most appropriate initial volume replacement for a patient with severe GI bleeding?

A) 200 mL of normal saline (NS) per hour for 5 hours
B) A liter of Ringer's lactate (RL) over 15 minutes
C) Two liters of D₅W over half an hour
D) 500 mL of 0.45% normal saline (1/2 NS) over half an hour