A Historical Reason for the Wage Gap Is That Salaries

A historical reason for the wage gap is that salaries were determined at a time when employers assumed that women

A) were less likely to be the primary financial provider for a family.
B) were inherently less physically capable than men.
C) were inherently less cognitively capable than men.
D) would be more likely to take parental leave or quit their job altogether when couples decided to have children.