The average monthly temperatures for the city of mathville are given in the chart above. one year, january's average temperature was 7 degrees warmer, february's was 3 degrees cooler, june's was 2 degrees cooler, august's was 3 degrees warmer, and november's was 7 degrees warmer. what did this do to the average yearly temperature?
a) the average remained the same.
b) the average increased by 1°.
c) the average decreased by 1°.
d) the average increased by 17°.