The_correct_statement_with_respect_to_lacIq_is:

• A. It is mutant of lac repressor gene and decreases the level of repressor
• B. It doesn‚Äö√Ñ√∂‚àö√ë‚àö¬•t controls the lacZ gene
• C. It is important for the vectors to replicate in a low copy number
• D. It doesn‚Äö√Ñ√∂‚àö√ë‚àö¬•t titrates out the repressor produced by wild type lac-I gene