Read the following context and choose the best option to answer the question.
Context: For the last couple of years , there has been a lot of giddiness around the creation or Rich Internet Applications or RIAs . Their fluidity , animation and ability to present and manipulate large amounts of data makes them readily appealing to businesses that want to go beyond the linear processes that HTML web sites offer . They are becoming more common and the demand from clients is increasing .
Question: What subject is the narrator discussing ?
Options: 
A. They 're talking about the stock exchange .
B. They 're talking about IT .
C. None of the above choices .
D. They 're talking about data businesses .


B