We analyze the transformation pattern: Each letter in the original word is shifted by a specific rule to obtain the corresponding coded letter. In this case, the shift appears to follow a consistent letter shift pattern, where each letter in the original word is moved a certain number of positions forward in the alphabet. For example:
Following the same pattern for the word BEACH:
Thus, BEACH is transformed into IDBFC based on the same letter-shifting pattern.
Therefore, the correct answer is (B) IDBFC.
Shown on the left is a set of equations. Which option belongs to the same set? 
Shown below is an arrangement of closely stacked spheres. Assume each one to be in contact with its immediate neighbour. What is the total number of points where the spheres touch each other?
The 12 musical notes are given as \( C, C^\#, D, D^\#, E, F, F^\#, G, G^\#, A, A^\#, B \). Frequency of each note is \( \sqrt[12]{2} \) times the frequency of the previous note. If the frequency of the note C is 130.8 Hz, then the ratio of frequencies of notes F# and C is: