What is the terminal outbound station of the D line in the Boston MBTA?
Riverside Station is the last station headed outbound on the D line of Boston's MBTA.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What is the terminal outbound station of the D line in the Boston MBTA?
### Input: 
### Response: Riverside Station is the last station headed outbound on the D line of Boston's MBTA.