Assertion A: Equilibrium price of a commodity is the price at which the quantity demanded of the commodity equals the quantity supplied.

Reasoning R: Equilibrium is the condition, once determined, tends to persist in time.

Choose the right options:

Correct option is B

1. Equilibrium price is determined where demand and supply meet.
2. Equilibrium conditions can change due to shifts in demand or supply (e.g., economic shocks, price changes).
While both statements are correct, equilibrium does not always persist over time, making (b) the correct answer.