What is a key advantage of HP UltraBook computers?

A.
thin, small, and lightweight for portability without compromising on performance, features, and
comfort

B.
the latest AMD processors for the best performance available in a notebook computer

C.
extra large display with full-sized keyboard for complete computing anywhere

D.
heavy-duty display frame and support structure made of metal

Explanation:
Reference:http://h41112.www4.hp.com/promo/envyultrabook/emea_africa/en/index.html#.UGoXAKT9FOg