Aberration: Which of the following statements are correct? (There could be more than one correct choice.)
A. Spherical aberration, but not chromatic aberration, occurs for lenses.
B. Chromatic aberration, but not spherical aberration, occurs for lenses.
C. Both chromatic aberration and spherical aberration occur for lenses.
D. Both chromatic aberration and spherical aberration occur for spherical mirrors.
Answer: C
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