question_answer

The stress versus strain graphs for wires of two materials A and B are as shown in the figure. If \[{{Y}_{A}}\]and \[{{Y}_{B}}\] are the Young's moduli of the materials, then                 

A) \[{{Y}_{B}}=2{{Y}_{A}}\]

B) \[{{Y}_{A}}={{Y}_{B}}\] 

C) \[{{Y}_{B}}=3{{Y}_{A}}\]

D) \[{{Y}_{A}}=3{{Y}_{B}}\]