Which of the Following Statements Is Incorrect

Which of the following statements is incorrect?

A) Periglacial regions occupy about 20% of the Earth's land surface.
B) Periglacial environments occur at high latitudes and high elevations.
C) There are no permafrost regions in Alaska due to its maritime subarctic climate.
D) Permafrost develops in areas where soil,sediment,or rock temperatures remain below 0°C (32°F) for at least two years.
E) Periglacial environments are found of the periphery of glaciated areas.