A manufacturing company has a large facility which has its offices at one end and a manufacturing floor at the other.  The company is looking to implement new equipment that requires access to the company’s SAN that is over 2.4 kilometers away in the office area. Which of the following solutions will satisfy this requirement？（）

• A、Install a longwave GBIC in the office SAN switch and string a multimode fibre from the office to the manufacturing floor
• B、Install a longwave GBIC in the office SAN switch and string a singlemode fibre from the office to the manufacturing floor
• C、Install a shortwave GBIC in the office SAN switch and string a multimode fibre from the office to the manufacturing floor
• D、Install a shortwave GBIC in the office SAN switch and string a singlemode fibre from the office to the manufacturing floor