The correct options are
A 12
C 58
D 34
Non-recurring decimals are decimals whose fractions' denominator can be written as powers of 10.
Here, the fractions 12, 58 and 34 can be written as 510, 6251000 and 75100 respectively.
The fractions 49 and 17 cannot be expressed as above.
So, decimal form of the fractions 12, 58 and 34 are the non-recurring decimals.