## Core Concept
The maximal allowable blood loss (MABL) for a surgical procedure can be calculated using the patient's weight, height, and preoperative hematocrit (Packed Cell Volume, PCV) level. This calculation helps in estimating the maximum amount of blood that can be lost without necessitating transfusion, considering the patient's physiological reserve.

## Why the Correct Answer is Right
The formula to calculate MABL is: MABL (mL) = EBV (mL) × (H_i - H_f) / H_i, where EBV is the estimated blood volume, H_i is the initial hematocrit, and H_f is the final hematocrit. For adults, EBV can be estimated as 70 mL/kg for males. Given the patient's weight (73 kg) and height (6'2" or approximately 188 cm), first, we calculate EBV: EBV = 73 kg × 70 mL/kg = 5110 mL. Assuming a final hematocrit (H_f) of 30% (a commonly used value for such calculations), and given H_i = 35%, we can substitute these values into the MABL formula.

## Why Each Wrong Option is Incorrect
- **Option A:** Without specific numbers, it's hard to directly refute, but incorrect calculations or assumptions (like wrong EBV estimation or incorrect final hematocrit value) would lead to wrong answers.
- **Option B:** Similarly, this option would be incorrect based on miscalculations or incorrect assumptions about the patient's blood volume or desired final hematocrit.
- **Option D:** This would also not align with correct calculations based on the provided patient data and standard formulas.

## Clinical Pearl / High-Yield Fact
A key point to remember is that the estimated blood volume (EBV) in adults is approximately 70 mL/kg for males and 65 mL/kg for females. For a rough estimation of MABL in a hurry, one might use a simplified version considering a drop to a certain safe hematocrit level, but precise calculations require the formula.

## Correct Answer Line
**Correct Answer: B. 1547 ml.**