Answer:
Option A) 23
Explanation:
We are given the following data in the question:
100, 105, 135, 145, 150
The respective forecasts were 110 for all five years.
We have to calculate MAD value.
Deviations = 10, 5, 25, 35, 40
Sum of Deviations = 10+5+25+35+40 = 115
MAD =

Thus, the correct answer is
Option A) 23