Question 27 and 28 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
How many users’ personal details had been stolen in the security breach

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

A．so they should work fast
B．so they should finish it as soon as possible
C．but they can take their time to do it
D．but they have not enough time to do it