Under what condition may a gas-fired appliance and a solid-fuel appliance be vented into a common chimney?

Under what condition may a gas-fired appliance and a solid-fuel appliance be vented into a common chimney?

• A. Only in a residential installation at the same level.
• B. In any installation as long as they are on the same floor.
• C. Only when the gas appliance is vented above the solid fuel.
• D. It is never allowed.

Answer: (A)