Questions 23 and 24 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions. According to the news, IPO ______.
A.is short for International Public Offering B.aims to seek to cash in on investor appetite for social media firms C.saw its shares more than double in value on their first day of trading D.is when companies list their shares on the stock market for the first time