Read the text and answer the question.
Avalanches are fast-moving masses of snow that slide down mountains. They can be triggered by natural causes like heavy snowfall or by human activities such as skiing. In Turkey, avalanches mostly occur in the eastern regions like Erzincan and Van. To stay safe, people should avoid steep slopes after heavy snow and always carry rescue equipment.
According to the text, which of the following is TRUE?
A)Avalanches are only caused by human activities.
B)Avalanches in Turkey happen mainly in the west.
C)Carrying rescue equipment is a safety measure against avalanches.
D)Heavy snowfall never triggers avalanches.