4D88 | All 4D Results - Keputusan 4D - Magnum 4D, Toto,

power 4dReal time live 4D draw results (Keputusan 4D) - Magnum 4D, Sports Toto 4D, Da Ma Cai, Sabah 88 Lotto 4D, Sarawak Special Cash Sweep 4D, STC 4D, Singapore Pools 4D + Toto.Transcript. Question 39 If the power of a lens is − 4.0 D, then it means that the lens is a (A) concave lens of focal length −50 m (B) convex lens of focal length +50 cm