Why would the banks in the united states in the mid-1800s have used a gold and silver standard?

a: people would not trust paper money if it were not backed up by something that had real value.
b: it was more secure against theft than paper money because it weighed too much for a thief to carry away.
c: the gold rush and some rich silver mines meant there was a lot of gold and silver available.
d: federal law required that all money had to be backed by gold and silver.

Problem 8-6 cullumber company is a multi product firm. presented below is information concerning one of its products, the hawkeye. date transaction quantity price/cost 1/1 beginning inventory 2,700 $17 2/4 purchase 3,700 26 2/20 sale 4,200 43 4/2 purchase 4,700 33 11/4 sale 3,900 47 calculate average-cost per unit. (round answer to 4 decimal places, e.g. 2.7613.) average-cost per unit $ link to text compute cost of goods sold, assuming cullumber uses: (round average cost per unit to 4 decimal places, e.g. 2.7631 and final answers to 0 decimal places, e.g. 6,548.) cost of goods sold (a) periodic system, fifo cost flow $ (b) perpetual system, fifo cost flow $ (c) periodic system, lifo cost flow $ (d) perpetual system, lifo cost flow $ (e) periodic system, weighted-average cost flow $ (f) perpetual system, moving-average cost flow $ click if you would like to show work for this question: open show work