5. For solvent extraction, which of the following statements are correct?
 (1) For neutral analytes, many small extractions are less effective than few largeextractions.
(2) The larger the partition coefficient ([S]2/[S]1) of a neutral analyte, the less the analyteremain in phase 2.(3) To extract the base analytes into organic phase, use a pH high enough to convert BHinto  B.
(4) To extract the acid HA into organic phase, use a pH low enough to convert A- into HA. (5) Most complexes that can be extracted into organic solvent are neutral, and chargedcomplexes are less soluble in organic solvents.Your answer:
(A) (1), (3) and (4)；
(B) (2) and (3)；
(C)(3), (4) and (5)；
(D)(3) and (4)；
(E) The statements are all correct.