Which sentence correctly follows the rules for mla in text citations for a quote from paige 9 of jon smith subs book solving equations

correct format : According to John Smith, the most common error in solving math questions "relates to the order of operations (9)."

For MLA format, quotations are enclosed within double quotation marks, the author is provided and the specific page. It should be noted that there should be no period after the parenthetical citation. 

i need more information about this article .

the correct answer will be d or c for me it may be different