help please.

The yearly profits of a company are shown in the table.

Which answer describes the average rate of change from Year 2 to Year 4?

 

Year           Profits (thousands $)

1                127.5

2                238.4

3                156.7

4                217.2

5                293.4

 

• Profits increased by an average of $21,600 per year from Year 2 to Year 4.
• Profits increased by an average of $10,600 per year from Year 2 to Year 4.
• Profits decreased by an average of $10,600 per year from Year 2 to Year 4.
• Profits decreased by an average of $21,600 per year from Year 2 to Year 4.