Which is the correct way of positioning the keyboard to prevent RSI?

A.

raise the front of the keyboard about 1/4 inches

B.

raise the front of the keyboard about 3/4 inches

C.

raise the front of the keyboard about 1/2 inches

D.

raise the front of the keyboard about 1/3 inches

E.

raise the back of the keyboard about 3/4 inches


Answer ASAP for 30 Points!!!