Which of the following is not an advantage of $GM$ crops?

What is the toxic protein produced in $Bacillus \text{ } thuringiensis$ called?

The toxic $Cry$ protein is released by the spores of . . . . . . which kills the larvae of butterflies feeding on plants like $Brassica$.

The toxic component of $Bacillus$ $thuringiensis$ is:

Which method is used to introduce the $Bacillus$ $thuringiensis$ toxin into crops?

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: