If a silent mutation occurs in the lac z gene of the lac operon in E.coli:

• A

  There is no synthesis of β galactosidase but transacetylase and permease are synthesized

• B

  Synthesis of all enzymes is stopped

• C

  Synthesis of β galactosidase, transacetylase and permease continues unhindered.

• D

  Repressor molecule cannot bind to operator even in absence of lactose