choices.label: A B C D
choices.text: toothbrush:toothpaste mobile phone:computer dictionary:newspaper mural:table lamp
explanation: "pen" and "ink" need to be used together, and "pen" corresponds to "ink". "toothbrush" and "toothpaste" need to be used together, and "toothbrush" corresponds to "toothpaste". "mobile phone" and "computer" are both electronic products, and "mobile phone" and "computer" are side by side. "dictionary" is a reference book for people to check and reference, and a "newspaper" is a printed publication that publishes news and current affairs reviews on a regular basis to the public. the two are two ways to obtain information and do not need to be used together. there is no necessary logical relationship between the quality inspection of "murals" and "table lamps".
relation: pen ink R3.10
relation: toothbrush toothpaste R3.10
relation: mobile phone computer R2.4