Read the third paragraph, and choose which sentence is most suitable as a paragraph leader. ........................... British Airways has outsourced a lot of its IT work in an attempt to cut costs. Many airlines are now charging for checked-in baggage. While the legacy carriers have had a significantly larger share of the lucrative business travel market, which is less susceptible to changes in the global economy, this is another market that the LCCs are starting to penetrate. In practice, the LCCs and the legacy carriers are becoming more like one another.