The correct option is C 435
To convert into mixed fraction, we need to convert it into whole number part and fractional part. i.e., split the numerator as a sum of multiple of 5(which is nearest to 23 and less than 23) and a number less than 5.
20 is a multiple of 5, which is less than 23 and nearest to 23.
∴235=(5×4)+35=(20+3)5
=205+35=435