In this task, you're given an article, a question which often contains a blank, four options (associated with "A", "B", "C", "D") and the answer to that question. Your task is to classify whether the given answer is correct or not by providing "Yes" or "No", based on the article.

[Q]: Article: Humans may be a bad influence on their best friends---at least when it comes to problem-solving. In a task that wasn't very tough, wolves performed must better than dogs. All the animals had to do was pull the lid off a food container, containing a sausage treat. Monique Udell studies animal behavior at Oregon State University in Corvallis. She tested 10 pet dogs and another 10 dogs from an animal shelter. In one set of tests, a person was nearby but did not encourage or discourage the dogs. Those dogs typically spent 10 to 15 percent of their time gazing at the person. They spent a mere 5 percent of their time or less touching the container. Udell offered the same challenge to wolves. These animals had been raised and fed by people but still lived outdoors. Here, the wolves didn't look at the nearby person. Instead, they devoted about 90 percent of the time to struggling with the box holding a treat. When someone walked around the dogs and actively encouraged them to keep trying to open the box, the dogs did spend more time handling the problem. A few more even managed to open the box. But their success rate still did not match the wolves. The dogs and wolves were also tested when no one was present. But even then, the dogs didn't paw or teat the box much more than they did when a human was present.
Question: What was the effect of encouragement on the dogs?
Options: (A) It made their success rate improve a lot (B) It made them seek less guidance (C) It made them a little more devoted to the task (D) It made them able to compete with the wolves
Asnwer: C
[A]: Yes

[Q]: Article: To the untrained eye it might seem like just a bit of a monkey trick. But when Milly the mandrill (, ) covers her face with her hand she is actually sending a serious message to her fellows: "Leave me alone!" Experts believe the 15-year-old mandrill invented the gesture to warn other monkeys at Colchester Zoo to give her some space. And, surprisingly, the signal has been picked by other members of the group, who use it when they too require _ . Biologist Mark Laidre believes the behavior is evidence of social culture among the mandrills. Importantly, the sign language is unlikely to have been influenced by human activities because mandrills do not copy humans. Mr. Laidre expects further research will uncover other monkeys using cultural gestures -- the ability to communicate with the hands in a meaningful way. "By covering their eyes with their hands, possibly conveyed to others that they wanted to be left alone and this message may have been respected as a 'do not disturb' sign," said Mr. Laidre. While the hand is in place, other monkeys are not likely to approach or touch the monkey. Those who rank lower in the social order also use the technique to avoid attacks from more powerful group members. As the discovery appears to be unique to Colchester Zoo, it suggests it is a local phenomenon that arose naturally in the community of 25 mandrills. Curator Sarah Forsyth said: "We believe Milly made up the signal and over the past five years some of the younger mandrills have picked it up. We're not sure why she started doing it but it could be as simple as 'I can't see them, so they can't see me'. It really does show you how intelligent mandrills are."
Question: What's the text mainly about?
Options: (A) How humans influenced monkeys. (B) A monkey invented a gesture. (C) A new social culture was discovered. (D) How experts made the new discovery.
Asnwer: C
[A]: No

[Q]: Article: When was the last time someone did something unexpectedly nice for you? Not someone you knew, but a total stranger? It's happened to me a few times, but two instances really stand out. A few years ago, I was dining out with a person who kept going on and on about himself, completely unaware of the fact that I was sitting there in misery . It wasn't his company that disappointed me. I was recovering from a bad grade in my study. I could have collapsed in tears right there at the table. When we picked up the check, the waitress said, "Your meal was already paid for." My friend and I didn't have a clue how it happened. Then I remembered a man coming in out of the corner of my eye. He was dressed in mostly white, sat down at the bar, had a glass of wine, stayed for maybe ten minutes and then left. The waitress said, "Yes, the gentleman who was in here a while ago paid for you." Just last year, I was running a half-marathon. With just 0.1 miles to go, I was out of gas. Runners call it "hitting the wall"; I thought I couldn't move another muscle. Out of nowhere, a teenager jogged up next to me and said, "What's your name sweetie? Jennifer? Okay, Jennifer, let's go! Come on! It's just around the corner! You can do it!". And he ran with me until I picked up my pace. I found him at the finish line to thank him for the encouragement only to learn he wasn't even supposed to be in the race that day. He was running in place of someone else. I still shake my head when I think of these momentary angels that came to me at my point of need. Do you have any experiences like this?
Question: Why did the author say she was in misery?
Options: (A) Because she got into trouble with her friend. (B) Because she couldn't enjoy her meal quietly. (C) Because her friend complained so much. (D) Because she was doing poorly in her study.
Asnwer: C
[A]:
No