Restriction Site Sequences for Six Restriction Enzymes Are Shown Below

Restriction site sequences for six restriction enzymes are shown below.The "|" symbol shows the site at which the sequence is cut."N" is any nucleotide, "Pu" is any purine, and "Py" is any pyrimidine.Which of these enzymes would create blunt ends rather than "sticky" single-stranded ends?

A) BstEII G|GTNACC
B) DraI TTT|AAA
C) HaeII PuGCGC|Py
D) HhaI GCG|C
E) EcoRI G|AATTC