Which of the following is true with regard to an undifferentiated approach? a) Products that can be marketed successfully with the undifferentiated approach include staple food items because most people have similar needs for these products. b) An undifferentiated approach is very successful when target customers have diverse needs. c) This approach assumes that individual customers in the target market for a specific kind of product have varying needs. d) An undifferentiated approach is appropriate when marketers can satisfy multiple types of customers with a single product mix. e) This approach is useful in many situations because buyers have similar needs for most product categories