Statement: I can take you quickly from Kanpur to Lucknow by my cab but then you must pay me double the normal charges,
Assumptions:
1. Normally, it will take more time to reach Lucknow from Kanpur.
2. People want to reach quickly but they will not pay extra money for it
Answer: A
Since the narrator asks for double charges to take the person quickly to Lucknow, it implies that normally it takes more time to reach Lucknow. So, I is implicit. Since one demands extra charges to reach the destination earlier than usual, the person in need would have to pay accordingly. So, II is not implicit.