Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: BNC RG6 Coaxial Cable, Black, BNC Male, UL rated, 6 foot - 5 Pack
Product description: BNC RG6 Coaxial Cable, Black, BNC Male, UL rated, 6 foot
Product feature: BNC RG6 Coaxial Cable, Length: 6 feet, UL rated, Lifetime Warranty
Product price: $2.54
Product brand: CE
Target attributes: Audio Channels
Answer: attribute: audio channels
value: None
source: None