At January 1, 2020, Bridgestine Inc. has a beginning inventory of 5,000 surfboards. Ross estimates it will sell 18,000 units during the first quarter of 2020 with a 5% increase in sales each quarter. Bridestine's policy is to maintain an ending inventory equal to 25% of the next quarter's sales. Each surfboard costs $190 and is sold for $250. How many units should Bridgestine produce during the first quarter of 2020?

A. 17,725

B. 18,000

C. 13,000

D.17,500