he acentric factor of a materical, 'ω', is defined as ω = -log10(Prsat)Tr- 1 = 0.7, where, Prsat = reduced vapor pressure, Tr = reduced temperature. The value of acentric factor is always
(A) > 2
(B) < 1
(C) > 1
(D) < 3
(A) > 2
(B) < 1
(C) > 1
(D) < 3