Answer:
The correct option is C. 5,400
Explanation:
Consider the provided number.

If the exponent of 10 is a positive number then you need to move the decimal point right as much as the exponent value.
If the exponent of 10 is a negative number then you need to move the decimal point left as much as the exponent value.
Now consider the provided number.

Here the power of 10 is positive, so move the decimal point right as shown.

Hence, the correct option is C. 5,400