Today I found a problem on Wolfram online server. Though this is my 1st post, its requested to remove that problem as soon as possible link-https://www.wolframalpha.com/widgets/view.jsp?id=3f4366aeb9c157cf9a30c90693eafc55
BUG REPORT- C and D have to be interchanged, else many will get confuse and get wrong results.
Wolfram helped me in many questions, now it's my time to help the community.
Regards, satyam roy