I NEED ANSWER'S ASAP PLEASE Which option explains why the sealing agents are an issue in the following scenario?

Jeremy is a civil engineer who has been called in to repair a leak in a fluid power system that supplies water to several houses. The engineer who originally designed the system placed the sealing agents in hard-to-reach places.

Sealing agents were not meant for use in this type of system; couplings are installed for this purpose.

Sealing agents were placed where the filter is usually located.

Sealing agents are made of rubber, cork, or metal and need to be replaced regularly.

Sealing agents are made of eco-friendly materials that are difficult to properly position in hard-to-reach places.