8 Which of the following statements is the most accurate? A) Relative PPP may be valid even when absolute PPP is not, provided the factors causing deviations from absolute PPP are more or less stable over different commodities space. C) Relative PPP may be valid even when absolute PPP is not, provided the factors causing deviations from absolute PPP are more or less stable over time. B) Absolute PPP may be valid even when relative PPP is not, provided the factors causing deviations from relative PPP are more or less stable over time. D) Relative PPP is not valid when absolute PPP is not. E) Relative PPP is only valid when absolute PPP is valid, providing the factors causing deviations from relative PPP are more or less stable over time.