Consider the Following Cost Data for the Cost Object; Number

Consider the following cost data for the cost object; number of machine setups. Each set of costs (A, B, and C) is from a different type of manufacturing operation and represents the cost behaviour for the cost of that company's machine setups. Number of
Machine Setups Cost A Cost B Cost C
0 $ 0 $80 $ 5
10 20 79 37
20 40 82 66
30 60 78 91
40 80 81 123
50 100 79 154
Cost B is best described as:

A) Fixed
B) Variable
C) Mixed
D) Discretionary