Which of the Following Statements Is True

Which of the following statements is true?

A) Roux in another name for beurre manié.
B) When combining a liquid and a roux, the roux may be cold or warm.
C) Flour is often browned so that it has greater thickening power in a roux.
D) Shortening can be used in place of butter to avoid a sauce that produces a "fuzzy" feeling in the mouth.