Compound (A) `(C_(10)H_(6))` liberates 2 mole of `CH_(4)` when treated with MeMgBr. On heating with `KMnO_(4)` solution, (A) produces benzene dicarboxylic acid which on mono-nitration produces only one peoduct and no other isomers. (A) can be.
A.
B.
C.
D.