Flame retardants containing bromine are used in many household products, such as mattresses and upholstery. Why is their use a matter of some concern? 1. They have high resistance to degradation in the environment. 2. They can be stored in humans and animals. Select the correct answer using the code given below

• A. न तो 1 और न ही 2
• B. 1 और 2 दोनो
• C. केवल 2
• D. केवल 1