As of 2014, Canada's Total Fertility Rate of 1

As of 2014, Canada's total fertility rate of 1.6 is low. What does this mean relative to the number of children that Canadian women are having?

A) Canada's women of child-bearings age are not as fertile as in previous years.
B) Canadian women have chosen lifestyle and careers over childbearing.
C) There are fewer Canadian women in their childbearing years as compared to older non-childbearing women.
D) Canadian families are smaller due to the socioeconomic strain of supporting larger families.