Correct option is A
A diploid nucleus (2n) undergoes meiosis, forming 4 haploid nuclei.
Each of these 4 haploid nuclei undergoes mitotic division, resulting in 8 ascospores inside the ascus.
This is a characteristic feature of sac fungi (Ascomycetes), such as yeast, Penicillium, and Aspergillus.
The number of ascospores in an ascus can vary but is most commonly 8.
Examples of Ascomycetes fungi: Yeast (Saccharomyces cerevisiae), Morels (Morchella), Truffles (Tuber), and Neurospora (Neurospora crassa).
The ascus is a defining feature of Ascomycota fungi, making them distinct from other fungal groups like Basidiomycota (mushrooms).
