Check all that apply please

Mary makes her own designed quilts at home and sells them on eBay. The following information is available for one specially designed quilt. hours spent/week 30 current output 15 output under the new design 20 O her new productivity under the new design is 0.67. O the % change in her productivity under the new design is 0.67 the change in her productivity under the new design is not 0.15. her current productivity is not 0.50