We are comparing below sandwich specimens,They have the same total weight $=68\mathrm{.}76$ grwith different core wall and skin thickness combinations as described below. The two plots are from modal analysis with both ends to be fixed. Flexural mode results are given as below:If we are seeking the higher flexural stiffness, which option and its reasoning you would report?Design $1$ Flexural modal analysis: t$\_$skin $=$ t$\_$ wall$=1\mathrm{.}5$ mm