Which of the Following Is Evident If Age at First

Which of the following is evident if age at first marriage is considered within a historical context

A)  Although the age of first marriage is higher now than it was in the 1920s, it has been increasing steadily since the 19th century. 
B)  Although the age of first marriage is lower now that it was in the 1980s, it is returning to a more traditional level. 
C)  Although the age of first marriage is decreasing, it has been steadily decreasing for the last few decades. 
D)  Although the age of first marriage is increasing compared to the 1970s, it is actually much more like those in the 1920s.