Select the triad from among the given options that is analogous to the given triad.

441 – 540 – 243​​

441 – 540 – 243

 Logic: All three numbers have sum of digits = 9

Sum of digits

441 → 4 + 4 + 1 = 9

540 → 5 + 4 + 0 = 9

243 → 2 + 4 + 3 = 9

Now check the options:

A. 225 – 333 – 432

2+2+5 = 9

3+3+3 = 9

4+3+2 = 9
(Follows)

B. 161 – 512 – 710

1+6+1 = 8 

5+1+2 = 8 

7+1+0 = 8 

(Not follows)

C. 432 – 512 – 711

4+3+2 = 9

5+1+2 = 8 

7+1+1 = 9

(Not follows)

D. 144 – 225 – 729

1+4+4 = 9

2+2+5 = 9

7+2+9 = 18 

(Not follows)

​Thus, correct option is (a).​