This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hand Injuries, Subject name: Orthopaedics
You are posted as an intern in causality. Which among the following patients with fracture will be your 1st priority to call ortho PG and inform? 
Select and explain. 
A. Patients finger is blackening, B. Patient cannot extend his arm, C. A 10 cm abrasion, D. Intra-articular fracture of elbow joint
A: Patients finger is blackening
Answer: A: Patients finger is blackening 
Explanation: Ans. a. Patient s finger is blackening