Stella Pang Is Translating a Scale from English to Cantonese

Stella Pang is translating a scale from English to Cantonese. To help with this process, Stella recruits Cindy and Yuk to translate the English scale to Cantonese separately. Once the two translators finish their individual translations of the scale, Cindy and Yuk then compare their translations and ultimately agree upon a third translation that Stella is able to use in her study. What format for translating scales into other languages has Stella utilized?

A) simple direct translation
B) random probe
C) translation/backtranslation
D) parallel blind technique