In the circuit diagram, X is a variable resistor and its resistance may be altered from $5.0\,\Omega$ to $500\,\Omega$. The electromotive force (e.m.f.) of the battery is $12.0\,\text{V}$. Its internal resistance is negligible. What is the greatest possible range of values of potential difference across the output?
- A$1.3\,\text{V}$ to $11.1\,\text{V}$
- B$1.3\,\text{V}$ to $12.0\,\text{V}$
- C$1.5\,\text{V}$ to $11.1\,\text{V}$
- D$1.5\,\text{V}$ to $12.0\,\text{V}$