“一丝不苟”中的“丝”的本意是（）。

A.计量单位

B.计时单位

C.丝绸

D.发丝

Some forward contracts are termed cash settlement contracts. This means:()

A. either the long or the short in the forward contract will make a cash payment at contract expiration and the asset is not delivered. 

B. at settlement, the long purchases the asset from the short for cash. 

C. at contract expiration, the long can buy the asset from the short or pay the difference between the market price of the asset and the contract price.