Critical Reasoning

Each child in a group of young children read aloud both a short paragraph and a list of randomly ordered words from the paragraph. The more experienced readers among them made fewer pronunciation errors in whichever task they performed second, whether it was the list or the paragraph. The order in which the two tasks were performed, however, had no effect on the performance of beginning readers, who always made fewer pronunciation errors when reading the paragraph than when reading the list.
Which one of the following, if true, most helps to explain why the order in which the tasks were performed was not significant for the beginning readers?
(A) Because several words were used more than once in the paragraph but only once in the list, the list was shorter than the paragraph.
(B) In reading the paragraph, the more experienced readers were better at using context to guess at difficult words than were the beginning readers.
(C) The more experienced readers sounded out difficult words, while the beginning readers relied solely on context to guess at difficult words.
(D) Both tasks used the same words, so that the words the children read in whichever task was performed first would be recognized in the second task.
(E) The beginning readers made more pronunciation errors than the more experienced readers did in reading both the paragraph and the list