Mehmet: I want to cook something special for my sister's birthday. I have a recipe for chocolate cake, but it needs 3 eggs. I only have 2 eggs. Can I use something else?
Chef: You can use 1/2 cup of yoghurt instead of each egg. So, for 3 eggs, you need 1.5 cups of yoghurt.
Mehmet: I have 1 cup of yoghurt. Is that enough?
Chef: No, you need 1.5 cups. You can also use 1/2 cup of mashed banana for each egg.
According to the dialogue, what can Mehmet use instead of eggs if he has 1 cup of yoghurt and 1 banana?
A)1 cup of yoghurt only
B)1 cup of yoghurt and 1/2 banana
C)1 cup of yoghurt and 1 banana
D)1 banana only