Explanation:
To find the coded form of the word "UNTIL" using the given coding scheme, we need to apply the same pattern that was used to code the word "GREAT" as "BVBCS".

- The first step is to analyze the coding pattern between the original word and its coded form.

Analyzing the coding pattern:
- The first letter of the original word ("G") is coded as the second letter in the coded form ("B").
- The second letter of the original word ("R") is coded as the fourth letter in the coded form ("V").
- The third letter of the original word ("E") is coded as the fifth letter in the coded form ("B").
- The fourth letter of the original word ("A") is coded as the third letter in the coded form ("C").
- The fifth letter of the original word ("T") is coded as the sixth letter in the coded form ("S").

From this analysis, we can observe the following pattern:
- The position of the letters in the coded form is determined by the order in which they appear in the original word.
- The coded form follows a specific sequence of letters, where each letter is placed in a position corresponding to its order in the original word.

Applying the coding pattern to "UNTIL":
- The first letter of "UNTIL" is "U", which is coded as the sixteenth letter in the coded form.
- The second letter of "UNTIL" is "N", which is coded as the nineteenth letter in the coded form.
- The third letter of "UNTIL" is "T", which is coded as the seventeenth letter in the coded form.
- The fourth letter of "UNTIL" is "I", which is coded as the fifteenth letter in the coded form.
- The fifth letter of "UNTIL" is "L", which is coded as the twentieth letter in the coded form.

Therefore, the coded form of "UNTIL" using the given coding scheme is "PSQKK" (option B).