Choose the letters whose water images are identical to the letter itself.

(A) D
(B) N
(C) Z
(D) C

Choose the correct answer from the options given below:

(A) and (D) only

The correct answer is Option (3) → (A) and (D) only

Analysis of Each Letter

• (A) D: If you flip the letter D vertically (across a horizontal mirror), the top and bottom curved parts swap, but because they are identical, the image remains the same.
• Identical? Yes.
• (B) N: When you flip N vertically, the diagonal line changes direction (it would slant from top-right to bottom-left instead of top-left to bottom-right).
• Identical? No.
• (C) Z: Similar to 'N', a vertical flip changes the direction of the middle stroke. It ends up looking like a reversed 'S' shape rather than a 'Z'.
• Identical? No.
• (D) C: The letter C is symmetrical horizontally. Flipping it over a water surface results in a shape that looks exactly like the original 'C'.
• Identical? Yes.