Which statements describe reactive arthritis (select all that apply)?

a. Methotrexate is an initial treatment of choice
b. Symptoms include urethritis and conjunctivitis
c. Diagnosed by finding of hypersensitive tender points
d. Increased risk in persons with decreased host resistance
e. Infection of a joint often caused by hematogeneous route
f. Self-limiting arthritis following genitourinary or GI tract infections