Read the Following Excerpt from a Patient's Health Record: "Examination

Read the following excerpt from a patient's health record: "Examination of Mr. Smith's right leg revealed a significant soft tissue mass over his distal femur on the right. The mass was tender. He did not have any knee effusion. I reviewed the labs and x-ray and the findings were consistent with osteosarcoma." Given this information, which of the following statements is TRUE?

A) Mr. Smith has a cancerous tumor originating in his knee joint.
B) Mr. Smith has a soft tissue mass on his femur caused by a build-up of fluid in his knee.
C) Mr. Smith has a soft tissue mass on the bottom part of his right femur.
D) Mr. Smith has fluid build-up in his knee.
E) Mr. Smith is experiencing an abnormal bone hardening on his right leg.