Several Teachers Are Discussing How Children Read

Several teachers are discussing how children read. Which of them made a true statement?

A) Hester, who said beginning readers sound words out, but advanced readers always retrieve words from memory
B) Fran, who said advanced readers sound words out and only beginning readers use memory retrieval
C) Carolyn, who said that as readers become more skilled, they sound out fewer words and retrieve more words from memory but will still sound out unfamiliar words
D) Mary, who said sounding out words is quicker than retrieving words from memory