What distinguishes tone from mood in writing?

A. Tone is how the reader feels when reading, whereas mood is the storyteller's attitude towards a subject
B. Tone is the narrator's attitude toward a subject, whereas mood is how the writing makes the reader feel
C. Tone is how the reader feels about a subject, whereas mood is the writer's attitude toward the writing
D. Tone is an unbiased feeling presented by the writer, whereas mood reflects the writer's biases

B. Tone is the narrator's attitude toward a subject, whereas mood is how the writing makes the reader feel.