Here's a problem to solve: A container is filled with 250 milliliters of water. The total mass of the container and the water is 300 grams. What is the total mass of the container and the water after being in a freezer for 2 hours?

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

- A: 50 grams
 
- B: 250 grams
 
- C: 300 grams
 
- D: 550 grams
 