Read the following article and select the best answer. Article: I came across quite a few language problems while on holiday with my family last summer. The most embarrassing was when my Mom apologized to the people we were staying with because her "pants were dirty". They looked at her in amazement, not knowing how to react. You see, Mom had fallen over and gotten mud on her jeans. But in Britain, "pants" means underpants, not trousers as it does back home. Katie -- From America When I asked for the "restroom" in a big department store, people kept directing me to a room with seats where I could sit and "rest". It took me years to get through to someone that I only wanted the toilet! Tom -- From America Last summer we went on a two-week family touring holiday, so Dad hired a car over the Internet. This was an old vehicle and there turned out to be lots of things wrong with it. When he phoned the hire company and tried to explain that the lock on the boot was broken, they thought he was talking about footwear! He had no idea their word for "boot" was "trunk". In the end we went to a _ and just solved the problem. Mary -- From Britain Last summer, I went to stay with a friend on the west coast. Her flat was on the first floor of a high-rise building so I got the lift up. Then I wandered round for ages looking for her flat but couldn't find it. Fed up and tired, I finally had to go out to find a phone box. She explained that her flat was on the first floor, which for me meant the ground floor. David -- From Britain Question: Which of the following words is from British English? - Pants - Restroom - Ground floor - Trunk
A:
Ground floor