问题如下图：
选项：
A. 
B. 
C. 
解释：
是因为一个月时间太短所以没有考虑时间价值吗？
NO.PZ2018113001000007 问题如下 A manager termines ththe current level of excess cash is $20 million. She cis to purchase futures contracts to replicate the return on target stoanbon Her target is 60% is allocateto stoaverage beta of 1.05 an40% is allocateto bonaverage ration of 5.2. The priof appropriate stoinx futures contrais $250,000 anthe beta is 0.98. The priof appropriate bonfutures contrais $110,000 anration is 6.5. The manager shoulbuy: 49 stoinx futures contracts an60 bonfutures contracts. 51 stoinx futures contracts an58 bonfutures contracts. 50 stoinx futures contracts an59 bonfutures contracts. B is correct. 请问根据公式计算出的结果是51.43份futures contracts，为什么不需要向上取整？Forwarcontracts和Future contracts，哪个需要向上取整？
这道题是简化了，所以没有给conversion factor,是吗？
