2021 Science & Technology - Environmental pollutants and stem cell research

On the basis of the passage given above, the following assumptions have been made :1. BPA may alter embryonic development in vivo.2. Biochemical and cell-based assays are useful in finding out treatments for pollution-induced diseases.3. Embryonic stem cells could serve as a model to evaluate the physiological effects of environmental pollutants.Which of the above assumptions are valid ?

• 1 and 2 only
• 2 and 3 only
• 1 and 3 only
• 1, 2 and 3