just need answer

The relationship between distance travelled, d, and time, t, can be represented by a linear relation. In 45 minutes, a bus travelled 60 km. In 100 minutes, the same bus travelled 120 km. An equation that represents this linear relation is Select one: O a. y - 45 = 12 IT(x-60) 12 O b. y - 60 = - IT ( X -45) O c. y - 45 =-12 IT(x -60) O d y- 60 = 12 IT(X-45)