Use the photovoltaic solar electricity potential chart shown on the next page to answer the given question.
Estimate how much electricity is generated by a south-oriented photovoltaic system consisting of 20 modules located in the northern part of Poland. The system has an efficiency of 14 %, and each module has an effective area of 1.4 m².

A) Approximately 5,488 kWh per year
B) Approximately 6,132 kWh per year
C) Approximately 7,275 kWh per year
D) Approximately 8,021 kWh per year