A customer has a wireless router installed in their home office. The customer is having issues with signal strength at the opposite end of the house. Which of the following is the BEST option to increase the signal strength?（）

• A、Install a high gain antenna focused towards the office wall.
• B、Run CAT5e cable to all of the rooms that have poor signal strength.
• C、Install a wireless repeater at the far end of the house.
• D、Install a second wired router in the far end of the house.