For which intervals below is the average rate of change of m(x) = -5x-3 less than -25?
Intervals
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A | 3 [tex] \leq [/tex] x [tex] \leq [/tex] 5
B | 4 [tex] \leq [/tex] x [tex] \leq [/tex] 5
C | 4 [tex] \leq [/tex] x [tex] \leq [/tex] 6
a) Interval A only
b) Interval C only
c) Intervals A and B only
d) Intervals B and C only