How did the work of Gregor Mendel change the scientific explanation about how traits were inherited?

A: Mendel showed that every trait is controlled by two inherited elements
B: Mendel showed that an organism contains miniature forms of its future offspring.
C: Mendel showed that traits skip a generation and are inherited grandparent to grandchild.
D: Mendel showed that tiny particles from every part of the body of each parent became blended and produced an individual with the characteristics of both.