Indicate Whether Each of the Following Costs Is a Product

Indicate whether each of the following costs is a product cost or a period cost. Assume a manufacturer.
A)________ direct materials used in factory
B)________ factory utilities
C)________ salespersons' commissions
D)________ salary of plant manager
E)________ indirect materials used in factory
F)________ depreciation expense on store equipment
G)________ indirect labor incurred in factory
H)________ advertising expense
I)________ direct labor incurred in factory
J)________ factory machinery repairs and maintenance
K)________ depreciation expense on factory machinery
L)________ supplies used in store
M)________ plant insurance expired