The stress versus strain graphs for wire...

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 younng's moduli of the materials, then

`Y_(B)=2A_(A)`

`Y_(A)=3Y_(B)`

`Y_(B)=3Y_(A)`

`Y_(A)=Y_(B)`

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