The table below shows the earnings, in thousands of dollars, for three different commissioned employees. $2,000 + 3% on all sales7% on all sales5% on the first $40,000 + 8% on anything over $40,000December4.45.65.2January3.53.853.6February4.74.94.4Who had the largest dollar amount in sales for the month of December?a.The salary plus commission employee.b.The straight commission employee.c.The graduated commission employee.d.They each had the same dollar amount in sales.