Consider the following generic manufacturing process. Throughput capacities are listed in parentheses after the name of each activity. Each task is performed by a separate piece of equipment.

There is an inventory buffer between each station, and assume there is no limit on how big the inventory buffer can become. Suppose the process starts with all buffers being empty. Task A $(8$ units$/$hr$)---->($Inventory buffer$)--->$ Task B $(12$ units$/$hr$)---->($inventory buffer$)--->$ Task C $(4$ units$/$hr$)----->($inventory buffer$)---->$ Task D $(7$ units$/$hr$)$What would Task D$\text{'}$s utilization be$?$ Pick the closest answer.