About 60% the base pairs in the human genome is AT. If the human genome has 3.2 billion base pairs of DNA, about how many times will the following restriction be present?
a) BamHI(recognition sequence is 5'-GGATCC-3')
b) EcoRI(recognition sequence is 5'-GAATTC-3')
c) HaeIII(Recognition sequence is 5'-GGCC-3')