The correct options are
A 72
C 73
D 65
If the digit at the ones place is less than 5, then the number is rounded off to the previous tens and if the digit at the ones place is 5 or more than 5, then the number is rounded off to the tens that comes after it.
Therefore 65,66,67,68 and 69 is rounded off to 70.
70, 71,72,73 and 74 is also rounded off to 70.