26. 在輔助性科技設備中(Assistive Technology Devices),「ECUs」和「AACs」分別指的是:
(A) Environmental Center Units 和 Accessible and Alternative Communication Systems
(B) Environmental Control Units 和 Accessible and Alternative Communication Systems
(C) Environmental Center Units 和 Augmentative and Alternative Communication Systems
(D) Environmental Control Units 和 Augmentative and Alternative Communication System