Final answer:
The equilibrium quantity is 5 thousand units and the equilibrium price is 12 euros per unit. Hence, the correct answer is option (A).
Step-by-step explanation:
To find the equilibrium quantity and price, we need to set the demand function (p = 17 - Qd^2) equal to the supply function (p = Qs^2). We can then solve for Qd and Qs and plug the values back into either equation to find the price.
After solving the equations, we find that the equilibrium quantity is 5 thousand units and the equilibrium price is 12 euros per unit. Therefore, the correct answer is Option A) Quantity: 5, Price: 12.