A 40-Year-Old Woman Reports Pain at the Thumb Base in One

A 40-year-old woman reports pain at the thumb base in one hand radiating to the distal radius. The provider learns that the woman knits for a hobby and is able to elicit the pain by asking the patient to pour water from a pitcher. Which condition is suspected in this patient?

A) Carpal tunnel syndrome
B) Palmar fibrosis
C) De Quervain's Tenosynovitis
D) Trigger finger