Which of the following statements is true about the hot pot restaurant? [br] [o

A hot pot restaurant in China which integrates artificial intelligence, big data management and smart robot service has attracted lots of consumers. After customers order their dishes with a tablet computer, robotic arms in the kitchen get all dishes ready and then the delivery robots sent the dishes to the tables. Workers in the kitchen control all the procedures and also monitor the data for better management.

China’s central bank has decided to issue a set of banknotes and coins to commemorate the 70th anniversary of the renminbi, which consists of one banknote and three coins. Apart from the 50-yuan special banknote which will circulate on the market with face value, there will be the five-gram gold commemorative coin with a face value of 80 yuan and two silver coins with face values of 300 yuan and 5 yuan weighing one kilogram and five grams respectively.