challenge: What is the potential benefit of the DNA test for the virus that causes cervical cancer, as funded by the Bill and Melinda Gates Foundation?
  
  A. It is only effective for women who have already been diagnosed with cervical cancer
  B. It requires a physician to administer the test
  C. It is more expensive than traditional Pap smears
  D. It may reduce the need for annual Pap smears and provide results in a few hours
  Answer: 