Here's a problem to solve: Laura adds 50 mL of boiling water to 100 mL of ice water. If the 150 mL of water is then put into a freezer, at what temperature will the water freeze?

Among the 4 following options, which is the correct answer?

- A: 0°C
 
- B: 15°C
 
- C: 37°C
 
- D: 50°C
 