If $n$ is a positive integer, then multiplying by $10^n$ has the effect of moving the decimal place $n$ units to the right

$0.0010203 \times 10^1 = 0.010203$
$0.0010203 \times 10^2 = 0.10203$
$0.0010203 \times 10^3 = 1.0203$
etc

So,
$0.0010203 \times 10^5 = 102.03$, which is NOT greater than $100,000$. ELIMINATE A
$0.0010203 \times 10^6 = 1020.3$, which is NOT greater than $100,000$. ELIMINATE B
$0.0010203 \times 10^7 = 10,203$, which is NOT greater than $100,000$. ELIMINATE C
$0.0010203 \times 10^8 = 102,030$, which is greater than $100,000$

Answer: D