The followinggraph shows themarginal utilityderived from milk and giant cookiespurchased by Sandy. Refer to the above graph to answer this question.If the price ofbothmilk and cookies are $1 each and Sandy has a budget of $7, how many will she purchase if she wishes tomaximize her total utility?

Select one:

A.4 milk and 3 cookies.

B.3 milk and 4 cookies.

C.5 milk and 2 cookies.

D.6 milk and 1 cookie.

E.2 milk and 5 cookies.