The table shows the change in a stock price over a five-day period.

Day

1

2

3

4

5

Change (dollars)

-1. 23

-0. 42

4. 72

-2. 95

1. 23

a. On what day did the stock price increase the most?

b. On what day did the stock price decrease the most?

c. On what day did the stock price change the most?

d. On what two days did the stock price change by the same dollar amount?