Question #N1086

The sentence "The dog chased its tail, which was a blur of white and brown." is grammatically correct. However, the sentence lacks variety in sentence structure. Which of the following revisions of the sentence most effectively creates sentence variety?
A. A blur of white and brown, the dog chased its tail.
B. Chasing its tail, which was a blur of white and brown, the dog ran around the yard.
C. The dog chased its tail, and it was a blur of white and brown.
D. The dog chased its tail, a blur of white and brown.