You are surveying in the Near East for archaeological sites, and come upon several artifacts on the ...

You are surveying in the Near East for archaeological sites, and come upon several artifacts on the ground surface. Historical documents suggest there was once a temple in this area. You think you have found the site. Because of the sacred nature of the site, you decide to excavate the least amount possible and thus want to know where the temple lies before getting out the shovels. How might you map the site without excavating it?
 
  a. Use ground penetrating radar to detect the walls.
  b. Use aerial photography to detect the outline.
  c. Use random sampling to excavate a series of test pits across the site.
  d. Use ground penetrating radar or aerial photography depending on their potential utility in this specific case.
  e. If the historical documents do not show a map of the site then excavations are the only means to accomplish the goals.