_ Pick out the correct statement.$?

• A. Reaction of NH‚Äö√á√â with HNO‚Äö√á√â to produce (NH‚Äö√á√ë)‚Äö√á√áNO‚Äö√á√â is endothermic
• B. With increase in NH‚Äö√á√â/CO‚Äö√á√á ratio, urea yield decreases for a given temperature, pressure and total feed rate
• C. Biuret (an intermediate during urea manufacture) is toxic to seeds and animals
• D. Both B and C