The graph below shows the number of pages that Victor has left to read in his book at the end of the day over seven days.

Pages Left to Read in Victor’s Book
On a coordinate plane, the x-axis is labeled Day and the y-axis is labeled Pages left. On day 0 there were 220 pages; Day 1, 180; Day 2, 170; Day 3, 140; Day 4, 140; Day 5, 100; Day 6, 60; Day 7, 40.

Which statement is supported by the graph?
A) Victor read 0 pages on day 4.
B) Victor read 170 pages on day 2.
C) Victor read the same number of pages on day 1 and on day 2.
D) Victor read the same number of pages on day 3 and on day 4.