
Correct statements for the given reaction are:

Compound A (cyclo butenedione with two hydroxyl groups) reacting with 2 equivalents of OH- to form compound B]
A. Compound 'B' is aromatic.
B. The completion of the above reaction is very slow.
C. 'A' shows tautomerism.
D. The bond lengths C-C in compound B are found to be the same. Choose the correct answer from the options given below:
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)
