Mashaal Masha
$$F(x)=\frac{9}{5}(x-273.15)+32$$

The function $F$ gives the temperature, in degrees Fahrenheit, that corresponds to a temperature of $x$ kelvins. If a temperature increased by $2.10$ kelvins, by how much did the temperature increase, in degrees Fahrenheit?
Difficulty: Hard
A: 

3.78

B: 

35.78

C: 

487.89

D: 

519.89

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