To answer this question, we need to understand the standard prefix used to signify a class.
Option A) B - This option is incorrect because "B" is not a standard prefix used to signify a class.
Option B) C - This option is incorrect because "C" is not a standard prefix used to signify a class.
Option C) L - This option is incorrect because "L" is not a standard prefix used to signify a class.
Option D) S - This option is incorrect because "S" is not a standard prefix used to signify a class.
Option E) T - This option is correct because "T" is the standard prefix used to signify a class.
The correct answer is E) T. This option is correct because "T" is the standard prefix commonly used to signify a class.