Product proliferation occurs in industries that produce:?

X

Xiao Bao

New member
Product proliferation occurs in industries that produce:

A) Ceramic tiles and lighting but not plaster-board.
B) Bricks and plaster of Paris but not laundry soap
C) House paint and concrete but not ceramic tiles
D) Bathtubs and hand basins but not wood stains

i totally dont understand the answers! please help me
 
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