The molal boiling point constant for water is`0.513^(@)C kgmol^(-1)`. When `0.1`mole of sugar is dissolved in `200`ml of water , the solution boils under a pressure of one atmosphere at
A. `100.513^(@)C`
B. `100.0513^(@)C`
C. `100.256^(@)C`
D. `101.025^(@)C`