Which of the following statements about coal is not true? A) Coal is relatively inexpensive to extract and obtain.
B) Coal is the most polluting of all the fossil fuels.
C) Coal is abundant in the United States.
D) Coal is difficult to ship and store for later use.

d

Explanation:

coal is difficult to ship and store for later use

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.