Which of the following passages has the most objective tone?

A
Do you know about the brave dogs in Nome, Alaska, who saved the town in 1925?

B
The people of Nome, Alaska were in big trouble in 1925. It was up to the dogs to save them.

C
The hero dogs in Nome, Alaska, did what no pilot could do: they brought medicine to the town.

D
In 1925, people were sick and planes couldn't land in Nome, Alaska. Teams of dogs delivered the medicine.