How to display the “miles” unit description after the distance in the GetLog view

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C#

ASP.NET

MVC

MVC4

I am going to write the MVC, Microsoft exam (70-486) while preparing I come across one question frequently asking in the exam but I found a different answer in many websites.

Question is.

You need to display the “miles” unit description after the distance in the GetLog view. Which line of code should you use to replace line GL21? (Each correct answer presents a complete solution. Choose all that apply.)

A. @log.Distance miles

B. @Htrml.DisplayFor(model => log.Distance) miles

C. @log.Distance.ToString() @Html.TextArea (“miles”)

D. @Htmi.DisplayFor(model => log.Distance.ToString()+ ” miles”)

For Ref see this link

In some website the answer given is A, B while some website given A, C. I know A is right, but between B and C which one right and why? Please someone guide me