8. sınıf ingilizce 3. ünite In the Kitchen (Mutfakta) Test 1

You see this instruction in a recipe: "Simmer the sauce for 10 minutes."
What does 'simmer' mean in this context?

A) Boil rapidly
B) Cook just below boiling point with small bubbles
C) Fry quickly over high heat
D) Bake at a low temperature