In segmenting the cell phone user product-market, cell phone maker Super Cellular found one segment that valued sending text messages and another that wanted their phone to play MP3 music files. The firm developed a single handset for both market segments and used the same marketing mix in targeting both segments. For this product-market, Super Cellular operated as a

Trade will take place: a. if the maximum that a consumer is willing and able to pay is less than the minimum price the producer is willing and able to accept for a good. b. if the maximum that a consumer is willing and able to pay is greater than the minimum price the producer is willing and able to accept for a good. c. only if the maximum that a consumer is willing and able to pay is equal to the minimum price the producer is willing and able to accept for a good. d. none of the above.