Is There Evidence of Life on Mars

Multiple Choice

Is there evidence of life on Mars?

A) Yes, at least at the time the Allen Hills Meteorite was formed, since it has fossils.
B) Yes, but it is only in the form of microbes found by Viking landers.
C) Yes, just found as fossils in the sedimentary rocks examined by Spirit.
D) No, nothing suggesting life has ever been discovered.
E) We have confusing and uncertain results to date.