Lauren wants to relight her company's conference room. How many fixtures will it take to light the working plane to the desired level? Given: The space is 20ftL30ftW10ftH. The company wants to invest in fixtures with fluorescent technology and brighten the space to 50FC. The fixtures they are interested in use 4 lamps with a maintained lumen output of 2600 lumens in 3500K color temperature. See the attached cutsheet. Lauren considers the fixture to be a category IV (chart in book and lecture). The working plane is 30 inches above the floor. Reflectance values are 80% ceiling, 50% wall, and 20% floor. Use .8 for the LDD and choose the RSDD from the fixture cutsheet that corresponds with options listed below. RSDD Light Loss numbers DIRECT LIGHTING: 92 DIRECT-INDIRECT: 82 INDIRECT LIGHTING: 72