A woman who is a known IV drug abuser recently gave birth. She had had no prenatal testing or care. The baby's blood was tested for HIV, HBV and HCV and the results are as follows: HBsAg positive, HBcAb positive, HBsAb negative HCV antibody positive HIV EIA reactive and HIV Western Blot nonreactive
a. Is there evidence of infection with HBV? Explain your answer ___________________
b. Is there evidence of infection with HCV? Explain your answer ___________________
c. Is there evidence for infection with HIV? Explain your answer_____________________