Which of the following is an incorrect statement?

GM crops are more tolerant to abiotic stresses such as heat, cold, salinity, and drought

Bt using berbicide-resistant GM crops, weeds canbe eliminated from the field without the use of manual labour

RNAi has been used to make tobacco plant resistant to Bacillus thuringiensis.

A nematode Meloidogyne incognita infects the roots of tobacco plants and causes a great reduction in yield.