Question:  The main difference between "actual act principles" (like the harm principle) and "internal principles" (like the universalizability principle) is that
A: internal principles focus on the agent's motives for acting.
B: internal principles focus only on the immediate effects of an action.
C: actual act principles focus on the agent's actual motives for acting.
D: actual act principles concern how we ought to think about other people.
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option. Write your response using less than 100 words.
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