*50 POINTS* pls help very urgent! Look at the pic then answer question.

Step-by-step explanation:
1. feet/min
2. square feet/min
3. cubic feet/min
4. square feet/min
A)
Hence rate of walking should be measured in feet/minute
B)
Hence rate of painting should be in sqaure feet per minute
C)
Hence rate of paining is measured in cubic feet per minute
D)
Hence rate of mopping should be in sqaure feet per minute