A factory worker assembles two types of products, Type A and Type B. Assembling one unit of Type A takes 20 minutes, and assembling one unit of Type B takes 15 minutes. The worker has a maximum of 8 hours (480 minutes) per day for assembly. The number of units of Type B assembled must be no more than two-thirds the number of units of Type A assembled. Let $A$ represent the number of Type A units and $B$ represent the number of Type B units, where $A$ and $B$ are nonnegative integers. Which of the following systems of inequalities best represents this situation?