Identifying Highest Sales Product

Below is a bar graph that illustrates the sales performance of four different products (A, B, C, and D) over a year. The vertical axis represents the total sales in thousands of dollars, and the horizontal axis lists each product. The sales figures are as follows:

• Product A: 50
• Product B: 70
• Product C: 30
• Product D: 40

Based on this graph, which product had the highest sales?