The diagram represents an aircraft moving along a straight horizontal path at constant speed. $W$ represents the weight of the aircraft. $L$ represents the lift (upward force) caused by air flowing over the wings. $T$ represents the thrust force produced by the engine. $D$ represents the air resistance (drag). The directions of these forces are shown on the diagram. How are the forces related to one another?
- A$L = W$ and $T = D$
- B$L = W$ and $T$ is greater than $D$
- C$L$ is greater than $W$ and $T = D$
- D$L$ is greater than $W$ and $T$ is greater than $D$