Suppose you conduct monthly retail audit of a local store. The results for Coca Cola

Classic 64 oz bottles for January-May 2018 are given below.

Date	Inventory	Shipments received since last inventory
January 1, 2018	100	500
February 1, 2018	200	600
March 1, 2018	300	800
April 1, 2018	600	700
May 1, 2018	500	400
June 1, 2018	400	300

Using the Nielsen Retail Audit formula, what is the number of Coca Cola Classic 64 oz bottles sold by the store during February 2018 (that is, between February 1, 2018 and March 1, 2018)?

(a) 300

(b) 400

(c) 500

(d) 600

(e) 700