Assume you have a digraph with 5 vertices (A, B, C, D, and E) and 9 arcs. A is incident from C, D, and E; B is incident to D and E and incident from C; D is incident to C and incident from E.Vertex D is
A. incident to vertices A and C.
B. incident to vertex E only.
C. incident to vertex A only.
D. incident to vertex B only.
E. none of these
Answer: A
Mathematics
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Find the sum or difference. Write the answer in lowest terms.- 
- 
A. - 
B. 
C. - 
D. - 
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