Decide major product for first order elimination reaction

This is my own created question.

The favourable thing for (c) to be a major product is conjugation of double bonds and highly acidic nature of hydrogen (resulting in elimination of hydrogen at a higher rate) adjacent to carbonyl group (credit $$-$$ Rover). According to information I have the above reaction is most probably reversible in nature.

(b) should be major product as per mechanism I have given. So which will be the major (or only) product. You may take high temperature conditions if temperature is required as we are doing elimination reaction.

• I think your mechanism is correct. – Nisarg Bhavsar May 4 at 11:58
• Have you considered acidic nature of H ? – Rover May 14 at 14:45
• The H attached to carbonyl is more acidic. – Rover May 14 at 14:46