Which sentence correctly follows the rules for MLA in-text citations for a quote from an article titled
"Solving Equations," written by John Smith on an internet website?

In "Solving Equations" it is suggested that people make the most errors misusing the order of operations.

John Smith suggests that "people make the most errors misusing the order of operations."

John Smith suggests that "people make the most errors misusing the order of operations" ("Solving Equations").

John Smith suggests that "people make the most errors misusing the order of operations" (Solving Equations).