Assertion (A): All the carbon atoms in $H_{\mathit{2}}C\mathit{=}C\mathit{=}{\mathit{C}\mathit{H}}_{\mathit{2}}$ are $S{P}^2$ hybridized

Reason(R): ${\mathrm{CH}}_2=\mathrm{C}={\mathrm{CH}}_2$ is a planar molecule

Assertion is correct but Reason is in correct

Both Assertion and Reason are correct but Reason is not correct explanation of the Assertion

Both Assertion and Reason are correct and the reason is the correct explanation of the Assertion

Both Assertion and Reason are false