To delete all comments in a document, in the Comments group, click the arrow next to the ____ button, and then click Delete All Comments in Document.

To use the ____ of mobile devices, you press the image of a key with your finger, a digital pen, or a stylus.

A. touch screen keyboard B. mouse C. joystick D. motion-sensing controller

String value: "BLACK HORSE" is equal to "Black Horse".

Answer the following statement true (T) or false (F)