If p and q are distinct reals, then 2 {(...

If p and q are distinct reals, then `2 {(x-p) (x-q)+ (p-x) (p-q)+(q-x) (q-p)}=(p-q)^2+(x-p)^2+(x-q)^2` is satisfied by (A) no value of x (B) exactly one value of x (C) exactly two value of x (D) infinite values of x

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