NEET Biology question

Read the following statements and select the incorrect ones. 1. When the transformed cells on agar plates containing ampicillin are spread, both transformed and non-transformed cells will grow. 2. Restriction enzymes are used in the isolation and separation of DNA from other macromolecules. 3. Downstream processing is one of the steps of rDNA technology. 4. Disarmed pathogen vectors are also used in the transfer of rDNA into the host.

• (A)(ii) and (iii)
• (B)(iii) and (iv)
• (C)(i) and (iii)
• (D)(i) and (ii)Correct