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At the beginning of 2006, both Alan and Dave were taller than Boris, and Boris was taller than Charles. During the year, Alan grew 2 inches, Boris and Dave each grew 4 inches, and Charles grew 3 inches. Of the following, which could NOT have been true at the beginning of 2007?
(A) Alan was shorter than Boris.
(B) Alan was shorter than Charles.
(C) Boris was shorter than Dave.
(D) Dave was shorter than Alan.
(E) Dave was shorter than Charles.
What is E