Which of the Following Statements Best Describes Einstein's Contributions and Views

Multiple Choice

Which of the following statements best describes Einstein's contributions and views about quantum theory?

A) Although his work on the photoelectric effect was an important contribution to quantum theory, Einstein never really accepted quantum theory.
B) He didn't make any significant contributions to the theory, but he did accept quantum theory.
C) Despite his important work on relativity, Einstein didn't make any important contributions to quantum theory, and furthermore he never really accepted quantum theory.
D) Although his work on the quantum theory of atoms was an important contribution, Einstein never really accepted quantum theory.
E) His work on the photoelectric effect was an important contribution to quantum theory, and he accepted the theory as a correct description of the microscopic world.