When Applying VSEPR Theory to Determine the Geometry About a Central

When applying VSEPR theory to determine the geometry about a central atom,it is important to count the number of electron groups.Separately consider the two atoms highlighted with an arrow in the molecule shown below.How many electron groups must be considered for each of these central atoms?

A) C₁ has two groups; C₂ has two groups.
B) C₁ has three groups; C₂ has four groups.
C) C₁ has four groups; C₂ has two groups.
D) C₁ has four groups; C₂ has three groups.
E) C₁ has four groups; C₂ has four groups.