In Terms of Suicide Rates in the U

In terms of suicide rates in the U.S. and in Canada, research has shown that:

A) Men aged 80 to 84 have the highest rates of suicide than any other group in the U.S. whereas the rates for men in Canada are fairly constant across age groups.
B) Women's suicide rates stays constant across age groups in both countries.
C) Rates of suicide for women in their fifties is relatively lower than in any other age group in the U.S. whereas the rates of suicide for Canadian women in their fifties are relatively higher than any other group and then they decline steadily.
D) Men are more likely than women to use lethal methods for committing suicide in the U.S. but not in Canada.