如果你观测到3个月后远期交割的1盎司黄金的价格为435.00美元，91天短期国库券的利率为1%，同时作为即期价格百分比的季度持有成本为0.2%，推断出1盎司黄金的即期价格。

Last week a production worker had gross earnings of $390.00. If she worked more than 40 hours last week and was paid 1.5 times her regular hourly rate for each hour worked in excess of 40 hours, how many hours did she work last week ？（） (1)If she had worked 4 more hours last week, her gross earnings would have been $435.00. (2)Her regular hourly rate last week was $7.50. A: 条件(1)充分，但条件(2)不充分． B: 条件(2)充分，但条件(1)不充分． C: 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． D: 条件(1)充分，条件(2)也充分． E: 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．

Last week a production worker had gross earnings of $390.00. If she worked more than 40 hours last week and was paid 1.5 times her regular hourly rate for each hour worked in excess of 40 hours, how many hours did she work last week ？（） (1)If she had worked 4 more hours last week, her gross earnings would have been $435.00. (2)Her regular hourly rate last week was $7.50. A: 条件（1）充分，但条件（2）不充分. B: 条件（2）充分，但条件（1）不充分. C: 条件（1）和（2）单独都不充分，但条件（1）和条件（2）联合起来充分. D: 条件（1）充分，条件（2）也充分. E: 条件（1）和条件（2）单独都不充分，条件（1）和条件（2）联合起来也不充分.