111,111,111 X 111,111,111 = 12,345,678,987,654,321
A
Correct answer
Explanation
This multiplication is mathematically correct. It's a fascinating pattern where multiplying any number consisting entirely of 1s by itself produces a palindromic sequence. The result 12,345,678,987,654,321 counts up from 1 to 8 then down from 9 to 1, creating a symmetric pattern. This works for any number of 1s: 11×11=121, 111×111=12321, etc.