6. Use the following information to answer the next question There are nine types of fruit. Three of these will be placed in a blender to make a milkshake. Four students are asked to calculate the total number of different milkshakes. Their answers are shown below. Alice answers 9 x 8 x 7 Bob answers , C3 Chris answers , P 3 David answers , Co Which students have an expression that correctly answers this question? a.) Alice and Bob c. Alice and Chris b. Bob and David d. Chris and David