Suppose That a Well-Respected Study Published in Child Psychology Today

Suppose that a well-respected study published in Child Psychology Today finds that a very high proportion of children raised by stay-at-home fathers are accepted to Harvard University. If a large number of previously working fathers quit their jobs and become stay-at-home dads, which of the following will occur, all else equal?
I The unemployment rate will decrease.
Ii The size of the labor force will decrease.
Iii The number of unemployed people will increase.
Iv) The unemployment rate will increase.

A) i) and ii) only
B) ii) and iv) only
C) i) , ii) , and iii) only
D) ii) , iii) , and iv) only