In America, children who are given secondhand clothing tend

In America, children who are given secondhand clothing tend to come from households with more children. This makes sense, but what is unusual is that children who wear secondhand clothing also tend to be injured accidentally more often than children who do not wear secondhand clothing.

Which of the following statements best explains the conclusion drawn above?

(A) Children who wear secondhand clothing tend to have parents who are more concerned about their safety and well-being.
(B) Children who wear clothing that doesn't fit well are more likely to get their sleeves and cuffs caught on playground equipment and have accidents.
(C) Younger children who come from larger families tend to get injured accidentally at high rates because they tend to engage in rough play with their older siblings.
(D) The youngest child, who gets the most secondhand clothing, is also the most likely to have an accidental injury.
(E) Secondhand clothing is nearly indistinguishable from clothing bought new.