First, let us write the place values of 4 in A and B.
In A, the number is 16.942 and the place value of 4 is 0.04.
In B, the number is 9.214 and the place value of 4 is 0.004.
It is clear that 0.04 > 0.004.
Hence, statement C best compares the value of 4 in each number.