Select the option which correctly matches one of the three major forms of nitrogenous wastes in animals with its features. 

• A

  Urea - Least toxic; requires moderate amount of water

• B

  Ammonia - Most toxic; requires a large amount of water for its elimination

• C

  Uric acid - Most toxic; can be eliminated with a minimum loss of water

• D

  Urea - Moderately toxic; requires no ATP for synthesis