option d). is correct.
because first we give x= 1 then it give value 1234 but when y= 5 then it doesn't satisfy the condition then x becomes 2 then it run the loop and gives output 234 then again y becomes 5 then it doesn't satify the condition again x becomes 3 then it run the loop and gives output 34 then again y becomes 5 then it doesn't satify the condition again x becomes 4 then it runs the loop and give output 4 then y becomes 5 also x becomes 5 so loop stop.
Hence , final output is 1234234344.
So, option d). is correct