correct option for the following statements

Which statement is TRUE about a closed system? In a closed system, energy may transfer from the surroundings to the chemical system or from the chemical system to the surroundings, but energy cannot. In a closed system, energy cannot transfer from the surroundings to the chemical system or from the chemical system to the surroundings, but matter can. In a closed system, energy and matter cannot transfer from the surroundings to the chemical system or from the chemical system to the surroundings. In a closed system, energy cannot transfer from the surroundings to the chemical system or from the chemical system to the surroundings, but energy cannot. Which statement is TRUE for dynamic equilibrium? A dynamic equilibrium exists once a reversible reaction occurs. the same amount of reactant and product are formed, meaning there is no net change. A dynamic equilibrium exists once a forward reaction occurs. Substances transition from the reactants to products until the reaction goes to completion. A dynamic equilibrium exists once a backward reaction occurs. Substances transition from the products to reactants until all the product is used up