A \(45^{\circ}\) off-axis specimen cut from an AS/3501 carbon/epoxy lamina is subjected to a tensile test. The specimen is \(3 \mathrm{~mm}\) thick and \(25 \mathrm{~mm}\) wide, and a tensile load of \(F_{x}=1 \mathrm{kN}\) on the specimen produces a corresponding strain \(\varepsilon_{x}=0.0003\). It is claimed that the off-axis Young's modulus, \(E_{x^{\prime}}\) can be determined from these results. Is this a valid claim? If so, why? If not, why not?