can I step-by-step answers please? thanks

There are three sequential operations (Station 1. Satiation 2, and Station 3). Incoming applications go to station 1 first, then to Station 2 finally to station 3, and then leave the process. There are 4 resources in Station 1, 3 resources in Station 2 and 2 resources in Station 3. The utilization of these stations are 87%, 86%, and 82%, respectively. In order to increase throughput, we need to Increase the capacity of station 1. Increase the capacity of station 2. Increase the capacity of station 3 None of the answers. Increase the capacity of all stations