The arithmetic mean of $n$ observations is $\bar{x}$. If the sum of $n - 4$ observations is $K$,what is the mean of the remaining observations?
- A$\frac{\bar{x} - K}{4}$
- B$\frac{n\bar{x} - K}{n - 4}$
- C$\frac{n\bar{x} - K}{4}$
- D$\frac{n\bar{x} - (n - 4)K}{4}$
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