3) Black inventor who recieved a patent for a machine that made leftover bread into crumbs.

a. Frederick Jones  b. Otis Boykin  c. Madame C. J. Walker  d. Norbert Rillieux  e. Joseph Lee  f. W. Lincoln Hawkins  g. Lloyd Augustus Hall  h. Garrett Morgan  i. David Crosthwait  j. Elijah McCoy