Jefferson Beach Marina included the following information in its financial statements. Sales in the current year of $575,000 and $400,000 in the previous year. Operating income of $75,000 in the current year and $25,000 in the previous year. In comparison to the previous year, the effect of sales growth on operating income was Multiple choice question. A. $10,938 B. $22,826 C. $7,609 D. $3,125