The question refers to an "above reaction", but the actual reaction scheme/image is not provided in the prompt. So the products cannot be derived rigorously from the given information alone.

However, since this is from the chapter aldehydes, ketones and carboxylic acids, such questions commonly ask for the products formed on strong oxidation / cleavage of a compound, where the resulting products are often carboxylic acids rather than aldehydes.

Let us analyze the options:

1. Option A: Butanal and acetaldehyde

   • Both are aldehydes.
   • Under strong oxidizing conditions, aldehydes are usually further oxidized to acids.

2. Option B: Butanoic acid and acetic acid

   • Both are carboxylic acids.
   • This is the most likely outcome if the reaction involves oxidative cleavage or strong oxidation.

3. Option C: Butanal and acetic acid

   • Mixed aldehyde + acid product.
   • Less likely under strong oxidation.

4. Option D: Butanoic acid and acetaldehyde

   • Again mixed acid + aldehyde.
   • Less likely unless selective oxidation is involved.

Thus, the most plausible answer is:

$\boxed{\text{Butanoic acid and acetic acid}}$

So the correct option is B.