An analyst does research about bond yield and gathers the following information about the call structure for a 7 percent coupon bond that pays interest semiannually and matures in ten years:
·not callable for the next 5 years
·first callable at beginning of year 6 (end of the fifth year) at $102
·first par call date at beginning of year 8 (end of the seventh year) at $100 If the bond is correctly priced at $102.75, the bond's yield to first call is closest to:（）

A. 3.34%

B. 6.35%

C. 6.68%

在二次大战前，有一批作家为避免侦探小说千篇一律，便在主角、写作风格上力求创新，而求新求变的结果使推理文学出现了新的写作形式，如心理惊魂小说、冒险动作______间谍小说、冷面硬汉派小说等，他们______重塑侦探形象、拓展取材范围，甚至走纯文学的路线，其目的无非是为了跳出传统推理小说的______。
填入画横线部分最恰当的一项是( )。

A．和 尝试 老套
B．和 试图 窠臼
C．或 尝试 窠臼
D．或 试图 老套