Final answer:
The correct answers are B and C, as after meiosis I, with no crossing over, the two cells contain different sets of chromosomes due to the random assortment of chromosomes during prophase I and anaphase I.
Step-by-step explanation:
After meiosis I, assuming no crossing over, the possible combinations of chromosomes in the two product cells are B. Different sets of chromosomes in both cells and C. Random assortment of chromosomes in both cells. During prophase I, chromosomes randomly align at the equator. This is followed by the separation of homologous chromosomes during anaphase I. As a result, the two cells produced each contain a haploid set of chromosomes that are different from each other due to the process known as independent assortment. This assortment is crucial to creating genetic diversity, which is further enhanced by the potential combinations available during metaphase II in meiosis II, leading to the production of four genetically unique gametes.