A 48-year-old woman presents with chronic widespread muscle, skeletal pain, fatigue, and non-restorative sleep for the past six months she also reports difficulty concentrating with no relief from NSAIDs. Physical exam reveals tenderness on multiple soft tissue points, but no joint swelling or signs information for test including ESR and CRP are within normal limits. What looks like most likely a diagnosis a rheumatoid arthritis B fibromyalgia, C systemic lupus, urethra hypothyroidism