Examine the following statements :<br>i) Factor of safety for steel should be based on its yield stress,<br>ii) Factor of safety for steel should be based on its ultimate stress,<br>iii) Factor of safety for concrete should be based on its yield stress,<br>iv) Factor of safety for concrete should be based on its ultimate stress.<br>The correct statements are<br>

Correct Answer: (i) and (iv)