Research Comparing the Approaches of Whole-Language and Phonics Has Shown

Research comparing the approaches of whole-language and phonics has shown that:

A) the whole-language approach produces superior word recognition.
B) the phonics approach helps children to sound out words better.
C) the phonics approach should be used in teaching children to read but students also benefit from whole-language instruction.
D) whichever approach is used at home will be most effective in school instruction.