Two statements about the bonds in ethene and ethyne are given below. Statement I: In ethene, the $\text{C}=\text{C}$ bond ($134\ \text{pm}$) is shorter than the $\text{C}-\text{C}$ bond of ethane ($154\ \text{pm}$), and the $\pi$ electron cloud lies in the plane of the six atoms. Statement II: Ethyne is linear, its $\text{C}\equiv\text{C}$ bond is $120\ \text{pm}$ long, and the electron cloud between the two carbons is cylindrically symmetrical about the internuclear axis.