Which of the following statements is/are true about Iron in Iron-Carbon equilibrium diagram?
1. It is soft and ductile
2. It is allotropic in nature
3. It is magnetic above curie temperature
4. Below the temperature of 1539 °C, iron is in liquid state
A. 1 and 2
B. 2 and 3
C. 3 and 4
D. 2 and 4
