The graph shows the relationship between the temperature of hot tea and the time it took to cool. Which...

The graph shows the relationship between the temperature of hot tea and the time it took to cool.
Which function can be used to find y, the temperature of the hot tea after it has been cooling for x minutes?
A. y = -2x - 120
B. y = 2x + 120
C. y = -2x + 122
D. y = 2x - 120