A plumber is installing a natural gas piping system for a new residential furnace. According to most fuel gas codes, which of the following is a mandatory requirement for the piping installation just before the final connection to the furnace?
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A
A flexible appliance connector must be used for the final 3 feet of the connection.
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B
The piping must be painted yellow for identification purposes throughout its entire length.
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C
A sediment trap must be installed downstream of the appliance shutoff valve and as close to the appliance inlet as practical.
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D
The gas pipe must be electrically bonded to the cold water piping within 1 foot of the appliance.