Acelane Inc., unlike its competitors, procures raw material from multiple suppliers. Each supplier in turn supplies raw material to many buyers, including Acelane. This

is an example of a$($ n $)$

relationship.

$(N$ or M in the following refer to many$)$

$M$:$1$

$1$:$N$

$N$:$1$

$1$:$1$

N:M