Risk factors for lifting injuries increases with: (i) increase in weight of object (ii) increase in vertical location of the lift, with reference to the floor (iii) increase in horizontal distance of object from the person (iv) decrease in vertical location of lift from floor to elbow height Group of answer choices only (i), (ii) & (iii) are true only (i) & (iii) are true all are true only (i), (iii) & (iv) are true