Due to human influences on climate, between 1990 and 2100, it is estimated that most probably average global temperatures will rise by between ______.
A.3. 1 and 8.9 degrees Celsius.
B.1.7 and 4. 9 degrees Celsius.
C.3.1 and 6. 9 degrees Fahrenheit.
D.1.3 and 4.9 degrees Celsius.