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 it is for 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