Correct way to express in English that a string is encoded ... using UTF-8 ... with UTF-8 ... in UTF-8?

[Andre Schappo via Unicode]

> On May 15, 31 Heisei, at 12:22 pm, Costello, Roger L. via Unicode <unicode at unicode.org> wrote:
> 
> Hello Unicode experts!
> 
> Which is correct:
> 
> (a) The input file contains a string. The string is encoded using UTF-8.
> 
> (b) The input file contains a string. The string is encoded with UTF-8.
> 
> (c) The input file contains a string. The string is encoded in UTF-8.
> 
> (d) Something else (what?)
> 
> /Roger
> 

(d) The input file contains a string which is UTF-8 encoded.

André Schappo