Which of the Following Is the IDEA Definition of Visual

Which of the following is the IDEA definition of visual impairment?

A) An impairment in vision that, even with corrections, adversely affects a child's educational performance.
B) Vision problems alone, or combined with other health problems, that prevent an individual from working.
C) Visual acuity less than 20/40 with the best possible correction in the better-seeing eye, and excluding those whose vision loss categorizes them as blind.
D) A level of vision which, with standard correction, hinders an individual in the planning and/or execution of a task, but which permits enhancement of the functional vision through use of optical or nonoptical devices, environmental modifications and/or techniques.