|Question 15Verbal

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While researching a topic, a student has taken the following notes:
- The Wairakei geothermal power plant in New Zealand uses a flash steam system to generate electricity.
- Flash steam technology requires geothermal reservoir temperatures above .
- The use of flash steam systems worldwide is limited because many geothermal reservoirs aren't hot enough.
- The Traunreut geothermal power plant in Germany uses a binary cycle system.
- Binary cycle technology can generate energy from lower-temperature (less than ) geothermal reservoirs.
- Binary cycle systems involve higher maintenance costs than flash steam systems.
The student wants to compare the disadvantages of the geothermal systems used at the Wairakei and Traunreut plants. Which choice most effectively uses relevant information from the notes to accomplish this goal?
Unlike the Traunreut plant, the Wairakei plant uses a flash steam system, which requires a less common resource: geothermal reservoirs with temperatures above .
A
Compared with the system used at the Wairakei plant, the system used at the Traunreut plant has a notable disadvantage: its cost.
B
The system used at the Traunreut plant overcomes the temperature limitations of the Wairakei plant's system but is more costly to maintain.
C
The system at the Wairakei plant requires temperatures above , while the system at the Traunreut plant can operate at lower temperatures.
D