The number of classic books Nanette sells in her bookshop varies according to the time of year, as shown in the scatterplot below. Classic Book Sales 450 400 300 250 Number of Classic Books Sold 20 Dec. Jan. Month Based on the information in the scatterplot, the number of classic books sold- A. decreases consistently from January through December. B. increases consistently from January through December. C. decreases until July and then increases until December. D. increases until July and then decreases until December