Resistance and resistivity — practice question

The diagram illustrates a resistor arrangement. What is the combined electrical resistance between X and Y?

• Aless than $1\,\Omega$
• Bbetween $1\,\Omega$ and $10\,\Omega$
• Cbetween $10\,\Omega$ and $30\,\Omega$
• D$40\,\Omega$