90% sure it's D. And I have to make this answer long or else I can't submit it so that's why I added this whole sentence
It was very big and could be seen just by walking down the streets, You said which statment explains the irony of it, but you didn't give me multiple choice, so this is all I could answer to
"Rules and Things Number 63--Never, Ever, say something bad about someone you don't know--especially when you are around a bunch of stranges. You never can tell who might be kin to that person or who might be a lip-flapping big mouthed spy.
The rules showed you how he governed his life and gave you insight into his mind and why he did the things he did and how he survived. I found them fascinating. He had such great life advice, even for adults.
Answer: Both authors are against the soda ban.