Which of the Following Is an Economic Cost of Unemployment

Which of the following is an economic cost of unemployment?
(i) Unemployed people often accept lower wages when they eventually find work.
(ii) Hysteresis occurs.
(iii) The unemployment rate falls.
(iv) Children whose parents are unemployed have lower academic outcomes.

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