What is the correct sample?

Android Tests. You can use the childSelector() method to nest multiple UiSelector instances. For example, the following code example shows how your test might specify a search to find the first ListView in the currently displayed UI, then search within that ListView to find a UI element with the text property Apps.

What is the correct sample?
A . UiObject appItem = device.findObject(new UiSelector()
.className(ListView.class)
.instance(1)
.childSelector(new UiSelector()
.text("Apps")));
B . UiObject appItem = device.findObject(new UiSelector()
.className("android.widget.ListView")
.instance(0)
.childSelector(new UiSelector()
.text("Apps")));
C . UiObject appItem = device.findObject(new UiSelector()
.className("android.widget.ListView")
.instance(new UiSelector()
.text("Apps")));

View Answer

Answer: B