Observe the following reaction and answer the following questions:
The product ‘R’ is
Ph−C|OH=C=C|OH−H
Ph−C|OH−CH=C||OH−OH
Ph−C||O−CH=C|OH−OH
Ph−C|OH−CH=C||O−H
Arrange in decreasing order of basicity, H2O, OH−, CH3OH,CH3O−