A A [FI What class (written in Boolean algebra notation) is represented by the shaded area in diagram (D) ? X AB 2 . A +B 3 . A+ B 4 . B +A In what diagrams does the shaded area represent a maxtern class? 1. (A) and (C) 2. (C), (D), (E) 3. (B) , (C), (D), and (F) (A), (C), (D), and (F)