Joseph can't recall his old phone number now that he has learned his new phone number.What leads to this type of forgetting

A)  proactive interference
B)  negative interference 
C)  retroactive interference
D)  positive interference

Retroactive interference occurs when new information interferes with the recall of old information. In this case, Joseph's new phone number is interfering with his ability to recall his old phone number. Proactive interference, on the other hand, occurs when old information interferes with the recall of new information. Negative interference and positive interference are not terms commonly used in the context of memory and forgetting.