50 years old male work as a constructor, 1 week ago when he started using a hummer he develop pain on the lateral side of the elbow

50 years old male work as a constructor, 1 week ago when he started using a hummer he develop pain on the lateral side of the elbow what is your diagnosis?
a) Osteoarthritis
b) Rheumatoid arthritis
c) Ulnar nerve compression
d) Lateral epicondylitis