de Quervain's disease affects:
a. Tendons of abductor pollicis longus and abductor pollicis brevis
b. Tendons of abductor pollicis longus and extensor pollicis brevis
c. Tendons of extensor carpi radialis longus and extensor carpi radialis brevis d. Tendons of flexor pollicis longus and flexor pollicis brevis​