Knee disorders soap 2

A 16-year-old girl is seen in the clinic for anterior knee pain that is exacerbated by running, jumping, and prolonged sitting. She denies any trauma but has recently increased the intensity of her training regimen. Which physical examination finding is most characteristic of her likely diagnosis?

1: Tenderness at the tibial tubercle
2: Tenderness around the patella with pain on resisted knee extension
3: Swelling of the posterior knee
4: Laxity on anterior drawer test