The line graph shows the monthly sales of a new product (in thousands of units) over 5 months. The x-axis represents the month number, and the y-axis represents sales in thousands of units. The data points are as follows:
Based on the line graph, between which two consecutive months was the increase in sales the greatest?
Month 1 and Month 2
Month 2 and Month 3
Month 3 and Month 4
Month 4 and Month 5
