9. Using the graph below. ansvver the following. a. Circle [or ll in the table on your ovvn paper) of the correct sign for each point. A B C D E f Positive Positive Positive Positive Positive Zero Zero Zero Zero Zero Negative Negative Negative Negative Negative f ' Positive Positive Positive Positive Positive Zero Zero Zero Zero Zero Negative Negative Negative Negative Negative f\" Positive Positive Positive Positive Positive Zero Zero Zero Zero Zero Negative Negative Negative Negative Negative b. Explain your reasoning for why f at point A I is the sign you selected. c. Explain your reasoning for why f\" at point E is the sign you selected. d. Explain your reasoning for vvhv f\" at point C is the sign you selected