Learning customer Customers country amount spent India 370 2 India 329 3 India 288 4 Korea 212 Korea 241 6 Korea 212 7 Korea 212 The summary of the dataset is below , you need to calculate the value of A yourself Count Average amount spent Standard deviation India 3 A 41 Korea 4 219.25 14.5 a. A=327.60 and there is more than one quantitative variable O b. A=329.00 and there is one quantitative variable O c. A=327.60 and there is one quantitative variable O d. A=329.00 and there is more than one quantitative variable