5.2 A company purchases unique (i.e., one-of-a-kind) inventory. The company purchases multiple items from its supplier as part of the same purchase to take advantage of lower shipping costs. The cardi- nality relationship (based on maximum cardinalities) between purchase and inventory is:

(a) 1:0

(b) 1:N

(c) 1:1

(d) N:N

(e) None of the above.