A patient is receiving cidofovir (Vistide) as part of treatment for a viral infection, and the ...

A patient is receiving cidofovir (Vistide) as part
 
  of treatment for a viral infection, and the nurse is preparing to administer probenecid, which is also ordered. Which is the rationale for administering probenecid along with the cidofovir treatment?
  a. Probenecid has a synergistic effect when given with cidofovir, thus making the antiviral medication more effective.
  b. The probenecid also prevents replication of the virus.
  c. Concurrent drug therapy with probenecid reduces the nephrotoxicity of the cidofovir.
  d. The probenecid reduces the adverse gastrointestinal effects of the cidofovir.