Look at the graph below and answer the question.
[Graph showing number of people using different transport in a city: Bus: 200, Metro: 150, Tram: 80, Bike: 45, Walking: 25]
Which of the following is true according to the graph?
A)More people use the tram than the metro.
B)Walking is more popular than biking.
C)The bus is the least used transport.
D)The metro is used by 150 people.