In the accompanying figure, "fish2" is a scene.

When you are logged in to Lync, a(n) ________ allows you to immediately see the online status of contact in your contact list

A) online list B) presence indicator C) signed in status D) availability window

For the three graph signals shown in Figure 9.2, which graph signal is likely to have the largest high-frequency components? Why? (All the graph signals are drawn at the same scale).