The parachutelike membranes of Africa's scaly-tailed flying squirrels differ from those of the flying squirrels in the family Sciuridae because they are attached to a cartilage rod at the elbow instead of the wrist.

• Abecause they are attached to a cartilage rod at the elbow instead of  
• Bbecause of being attached to a cartilage rod at the elbow rather than at  
• Cin their attachment to a cartilage rod at the elbow instead of being attached at  
• Din that they are attached to a cartilage rod at the elbow rather than at  
• Ein their being attached to a cartilage rod at the elbow instead of