Suppose you have a large bucket containing 40% red gummy bears and 60% green gummy bears. You take many, many random samples of 25 gummy bears and each time note the proportion that are red. From this, you create a distribution of all your sample proportions of red gummy bears. You should expect the standard deviation of your distribution of sample proportions to be approximately which of A–D? 

A. 0.010 

B. 0.020 

C. 0.098 

D. 0.400