Sergo the beaver loves to cook. His favorite meal is Chakhokhbili.
海狸塞尔戈喜欢烹饪。他最爱的菜肴是Chakhokhbili。
When cooking in the garden he uses a single gas burner. He performs the following actions after each other:
在花园里做饭时，他使用一个单头燃气灶。他依次进行以下操作：
| 1 | Cook an onion 煮一个洋葱 | 10 minutes |
|---|---|---|
| 2 | Cook a bell pepper 煮一个甜椒 | 10 minutes |
| 3 | Combine the cooked onion and cooked bell pepper, add a tomato and cook this together把炒好的洋葱和炒好的甜椒混合在一起，再加入一个西红柿一起炒。 | 20 minutes |
| 4 | Cook a chicken 煮鸡 | 30 minutes |
| 5 | Combine everything from steps 3 and 4, add some spices, and cook it all.将第 3 步和第 4 步的所有食材混合在一起，加入一些香料，然后一起烹饪。 | 20 minutes |
In total Sergo needs 90 minutes to prepare his Chakhokhbili on a single gas burner.
总的来说，塞尔戈用一个煤气灶做一道恰霍克比利菜需要 90 分钟。
Question: 问题:
When Sergo cooks at home he has many gas burners available. He is able to use more burners so his meal is ready sooner.
当塞尔戈在家做饭时，他有很多燃气灶头可用。他能用更多的灶头，所以饭菜能更快做好。
Which of the following statements is NOT correct?
以下哪个陈述是不正确的？
A. Sergo can reduce the cooking time by 10 minutes when using 2 burners
B. Sergo can reduce the cooking time by 30 minutes when using 2 burners
C. Sergo can reduce the cooking time by 40 minutes when using 3 burners
D. Sergo can reduce the cooking time by 50 minutes when using 4 burners
Explanation 解释
The correct answer is:
正确答案是：
Sergo can reduce the cooking time by 50 minutes when using 4 burners
使用 4 个炉灶时，Sergo 能够将烹饪时间缩短 50 分钟。
The left picture illustrates how to decrease the cooking time by 40 minutes, the right picture illustrates how to decrease the cooking time by 30 minutes.
左边的图片说明了如何将烹饪时间减少 40 分钟，右边的图片说明了如何将烹饪时间减少 30 分钟。
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