The table below shows the quarterly revenue (in millions of dollars) generated by four different sectors of a company over the last year.
Quarter | Sector A | Sector B | Sector C | Sector D |
---|---|---|---|---|
Q1 | 15 | 20 | 30 | 25 |
Q2 | 25 | 18 | 35 | 20 |
Q3 | 20 | 15 | 28 | 30 |
Q4 | 30 | 25 | 40 | 35 |
Based on the data, which sector experienced the highest total revenue for the year?