Q $09.$ The question given below is followed by two statements numbered I and II$.$ Determine if the statements are, individually or together, sufficient to answer the question.

Question: What percentage of income does Susan save?

Statements:

I. She spends $\backslash (22\backslash \%\backslash )$ of her income on house rent and food.

II$.$ If she decreases her total spending by $\backslash (10\backslash \%\backslash ),$ the she would have saved $\backslash (25\backslash \%\backslash )$ of her income.

A$.$ Each statement alone is Ffficient to answe: the question.

B$.$ Both statements I and II together are sufficient to answer the question asked but neither statement alone is sufficient.

C$.$ Statements I and II together are not sufficient to answer the question asked and additional data to the problem is needed.

D$.$ Only one of the statements, alone, is sufficient to answer the question but other statement is not.