PLZ HURRY, TIMED thanks

The table represents the speed of a car in a northern direction over several seconds. A 2-column table with 5 rows. The first column labeled Column 1 has entries 0, 2, 4, 6, 8, 10. The second column labeled Column 2 has entries 5, 10, 15, 20, 25, 30. Column 1 would be on the x-axis, and Column 2 would be on the y-axis. Which best lists the titles of each column?
a- Column 1 should be titled “Time,” and Column 2 should be titled “Velocity.” b- Column 1 should be titled “Velocity,” and Column 2 should be titled “Time.” c- Column 1 should be titled “Time,” and Column 2 should be titled “Acceleration.”
d- Column 1 should be titled “Acceleration,” and Column 2 should be titled “Time.”