The answer is letter B
If we look at (A) its bassicly saying that 231 eggs are added to 46 brown eggs. But that is not what they are asking us- they are asking us the number of white eggs USED last week, so we have to use subtraction. Letter (B) is saying that 46 brown eggs are added to the # of white eggs uased last week, which equals 231. We can use subtraction in order to solve this-
so letter B is correct!