Which example, below, is MLA?

An important aspect of document design is consistency;"$[$c$]$onsistency means

that the same text or the same type of text or visual is treated in a uniform or

harmonious way" $($Rude $1991).$

An important aspect of document design is consistency; according to Rude $"$

$[$c$]$onsistency means that the same text or the same type of text or visual is

treated in a uniform or harmonious way" $(36).$

An important aspect of document design is consistency; according to Rude

on page $36,"[$c$]$onsistency means that the same text or the same type of text

or visual is treated in a uniform or harmonious way."

An important aspect of document design is consistency; $"[$c$]$onsistency means

that the same text or the same type of text or visual is treated in a uniform or

harmonious way" $($Rude$,36).$