Which of the Following Describes the Pattern of Change in Global

Multiple Choice

Which of the following describes the pattern of change in global average temperature?

A) Since the late 1970,the average global temperature has not been below the 20th century average.
B) It was warmer than the 20th century average up through 1950,but has stabilized since.
C) The yearly temperatures have been different,but even so,haven't been different from the 20th century average.
D) As the 20th century average increases,the temperature increases.
E) Since the late 1970s the global temperature has been below and above the 20th century average.