You overhear someone making a phone call for travel arrangements.
'Yes, I'd like to book a flight to London. I need to depart on October 15th and return on October 22nd. It's for a business conference, so I'll need a hotel near the convention center for seven nights. Please confirm everything via email.'
How many nights will the person be staying in London?
A) Eight nights.
B) Exactly one week.
C) Seven nights.
D) Until the business conference ends.
E) More than seven nights.