Which Two Official Measures of Unemployment Are Commonly Used in Official

Which two official measures of unemployment are commonly used in official statistics?
(i) People in receipt of unemployment- related benefits such as a 'jobseeker's allowance'
(ii) People who have never worked in their lives
(iii) People of working age who are without work can immediately start working and are actively seeking employment
(iv) People who have never actively sought employment

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