15. Fastline operates a network of train services across four routes. Each route has restricted capacity in terms of cus

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15. Fastline operates a network of train services acrossfour routes. Each route has restricted capacity in terms ofcustomers per train due to the length of platforms alo routes alsohave different fixed operating costs and average contributions percustomer as follows:
Max customers per train
Average contribution per customer
Train fixed operating costs
Route A
400
50
18,000
Route B
450
55
21,000
Route C
350
60
19,000
Route D
300
70
18,000
Fastline has sufficient cash resources to purchase oneadditional train. Assuming the train would operate at full capacitywherever it is deployed, sect which route the train should be -d onto maximise profits.
A. Route A
B. Route B
C. Route C
D. Route D