Identical sized RNA transcript is detected by Northern blot analysis of UDP glucuronosyl transferase obtained from human liver and kidney. Microarray analysis of the same samples shows equal spot intensity, ohereas Western blot detects a 55 kDa strong band in liver, but a very faint band in kidney of same size. The regulation of UDP glucuronosyl transferase is

• A. transcriptionally controlled
• B. post-transcriptionally controlled
• C. translationally controlled
• D. post-translationally controlled