根据短文内容，选择最佳答案。
Hampton Court Motor Cruiser
16 Hampton Court Road TEL:208-977-1728
Hampton Court Motor Cruiser is a boat docked on the River Thames. Facilities(设施) include heating, Smart TV and Wi-Fi. The price per stay also includes the free use of a 4-seat electric boat and barbecue facilities. There is no staff at all on board during your stay.
Hilton London Green Park
4-6 Half Moon Street TEL:207-629-7522
Hilton London Green Park stays in the heart of London. It features modern rooms with air conditioning. Wi-Fi is available in public areas and is free of charge. There is also a cocktail bar on site. All children are welcome.
Arbor City
12 Osborn Street TEL:207-247-3313
Arbor City Hotel is just next to the Whitechapel Art Gallery. It offers free Wi-Fi and 24-hour room service. Air-conditioned rooms feature a TV, a safe and a shower. Parking is available on site and costs GBP 24 per day. For an additional charge, the hotel offers various breakfast options: English breakfast, Continental breakfast, Vegan and Dairy-free breakfast. The hotel is 10 minutes' tube ride from the West End.
Abercorn House Hostel
28-0 Bute Gardens TEL:203-696-0215
Abercorn House Hostel is located just a 3-minute walk from Hammersmith Underground Station, with a 24-hour front desk. Guests can stay in rooms or dormitories fitted with a wardrobe. Some come with a shower, while others offer access to a shared bathroom. They can also use a shared kitchen to prepare their meals. Wi-Fi is available and costs GBP 1 per hour. Non-smoking throughout.
出现联会现象时，DNA分子数与染色体之比是( )