If you need $$6$$ minutes to cook $$2$$ eggs, you will need  minutes to cook $$4$$ eggs in a pot. (The pot can hold $$4$$ eggs.) 
Overseas Competition->Knowledge Point->Combinatorics->Strategies and Operations->Planning
It takes $$6$$ minutes to cook a $$2$$ raw egg, and of course a $$4$$ raw egg will be cooked in a pot, and it will still take $$6$$ minutes to cook. So choose $$\text{B}$$. 