Final answer:
The number of ceramic vases that should be produced in 2016 is 5,900 vases.
Step-by-step explanation:
To find the number of ceramic vases that should be produced in 2016, we need to consider the demand and the ending inventory. The demand is given as 6,000 vases and the ending inventory is 500 units. We can calculate the required production by subtracting the ending inventory from the demand: 6,000 - 500 = 5,500 vases. Therefore, the answer is A) 5,900 vases.