The mean of 50 observations is 200. But later he found that there is decrements of 47 from each observations. what is the the updated mean is ?	Options:
A) 165 B) 185 C) 153 D) 198 E) 199
153   Answer is 153
<result>C</result>
The mean of 50 observations is 200. But later he found that there is decrements of 47 from each observations. what is the the updated mean is ?