Sam needs at least 78 credits to get his college degree. At the end of his third year, Sam has a total of 52 credits. Which inequality represents the number of credits, C, Sam needs to get his degree?

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A - C is less than or equal to 26.

B - C is less than or equal to 78.

C - C is greater than or equal to 26.

D - C is greater than or equal to 52.