The error in the sentence "I have bought a furniture yesterday" lies with the word C: furniture. There are two main issues here. Firstly, "furniture" is an uncountable noun in English. This means it does not take an indefinite article ("a" or "an") before it, nor does it have a plural form (we don't say "furnitures"). To refer to individual items, we would use phrases like "a piece of furniture" or "some furniture."
Secondly, the use of "yesterday" indicates a specific point in the past, which typically requires the simple past tense (e.g., "I bought"). The present perfect tense ("have bought") is generally used for actions that started in the past and continue to the present, or for past actions with a result in the present, without a specific past time marker. Combining "have bought" with "yesterday" is grammatically incorrect. Therefore, the sentence should correctly be "I bought some furniture yesterday" or "I bought a piece of furniture yesterday."