Which of the following two statements is correct? a. The soda commonly used in the kitchen for making tasty crispy pokodas is baking soda. The baking soda is a sodium carbonate. b. Washing soda is usually used as a cleaning agent for domestic purposes and in glass, soap, paper industries. The washing soda is sodium hydrogen carbonate.

• A. Only a
• B. Only b
• C. Both a and b
• D. Neither a nor b