If a repressor $(R1)$ binds to the promoter of another repressor $(R2)$ the outcome is $?)?$

nothing happens because both regulators $($repressor$)$ are redundant $)>R2=(0.$

two repressors $(R1+R2)$ in a row result in super repression. $)>R2=(2xR.$

nothing happens because the first repressor does not interfere with the second repressor $($R$1>$R$1=$R$).$

activation of transcription because a repressor prevents the activation of another repressor which results in activation of transcription $(R1>R2=A.$