help i dont know if i got this right!?

Question 9 A sporting goods retailer conducted a customer survey to determine its customers primary reason for shopping at their store. The results are shown in the graph below. 40 30 Frequency 3 10 Prices Merchandise Convenience Other Responses What proportion of the customers responded that the \"prices" or "merchandise\" was the reason they shopped at the store? if} a} 0.31 i j:- b} 0.43 ' j:- Cl 0.28 -:' i j:- d) 0.71 {E} e) none of these