When charges qa qu, and qe are placed respectively at the corners a, b, and c of a right triangle, the potential at the midpoint of the hypotenuse is 19 V. When the charge qa is removed, the potential at the midpoint becomes 13 V. When, instead, the charge qu is removed (qa and q. both in place), the potential at the midpoint becomes 11 V. What is the potential at the midpoint if both charges q: and q are removed? Select one: O a. 6 V O b. 5 V O c. 13 V O d. 8 V O e. 14 V Clear my choice