In particular, children come to understand the following five counting principles:
a) One-to-one correspondence, cardinality, stable order, abstraction, order irrelevance
b) One-to-one correspondence, conservation, cardinality, seriation, identity
c) One-to-one correspondence, cardinality, stable order, seriation, abstraction
d) One-to-one correspondence, conservation, cardinality, abstraction, order irrelevance