You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

[Q]: Category: TO SERVE 
Clue: You can serve your leftovers directly from this brand of tight-sealing food containers introduced in 1945
[A]: tupperware


[Q]: Category: '60s ROCK 
Clue: In July 1967 this group's "Light My Fire" became Elektra Records' first No. 1 single
[A]: the doors


[Q]: Category: WHITE 
Clue: The name of this disease comes from Greek words for "white" & "blood"
[A]:
leukemia