Nobel prize was given to Andrew Fire and Craig Mello for their work on $RNAi$ on

Who discovered the super bug?

What does $Bacillus$ $thuringiensis$ produce that is responsible for the death of certain insects?

The transgenic variety of rice is known for:

Given below are two statements:
Statement $I$: $Bt$ toxins are insect group specific and coded by a gene $cry$ $IAc$.
Statement $II$: $Bt$ toxin exists as an inactive protoxin in $B. \text{ thuringiensis}$. However, after ingestion by the insect, the inactive protoxin gets converted into an active form due to the alkaline $pH$ of the insect gut.
In the light of the above statements, choose the correct answer from the options given below:

$BT$ cotton is resistant to