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.