"apo-repressor of trp operon is an inactive form of repressor." justify this statement. select one of the options below as your . a. apo-repressor can only bind to the operator site of trp operon when a tryptophan molecule, which is a co-repressor, binds to it. b. apo-repressor acts as an inducer if there is a lesser amount of tryptophan present in the surrounding medium and remains inactive when sufficient tryptophan is present. c. apo-repressor cannot bind to the operator site of trp operon if a tryptophan molecule, which is a co- repressor, binds to it.