Diploid ($2n$) organisms that reproduce sexually form haploid ($n$) gametes. However, some plants, including wheat, are able to make diploid or haploid gametes. These gametes may then fertilise diploid or haploid gametes from another plant. Which of the following statements are correct for plants of this type? 1. Diploid gametes may arise from an error during reduction division (meiosis). 2. The offspring will always have a higher chromosome number. 3. The offspring could be either $2n$, $3n$ or $4n$. 4. In theory, the chromosome number could rise in every generation.
- A1, 2 and 3
- B1, 2 and 4
- C1, 3 and 4
- D2, 3 and 4