Inheritance Is Said to Be Both Stable and Variable Because

Inheritance is said to be both stable and variable because

A) chromosome structure ensures that the DNA sequence of a chromosome never changes but allows offspring to inherit individual chromosomes randomly.
B) the process of gamete formation never changes, but the number of chromosomes in a gamete differs in different offspring.
C) most of the time, genetic material is transferred with complete accuracy to the next generation while still creating unique individuals.
D) each new individual is a mixture of different chromosomes, but the same genes are found on every chromosome in that individual.