—I’d like to take a chance and run a business.

—Do you know about the local market? ___________.

A．No problem

B．Better play it safe

C．Do as you please

D．Think nothing of it

某人预计五年后需要一笔资金8万元，现在市场上正在发售期限为五年的电力建设债券，年利率 10%，一年计息两次，某人现在应该购买( )元建设债券，才能保证五年后获得8万元的资金。(P/F， 5%，10)=0.614，(P/F，10%，5)=0.621，(P/F，11%，5，)=0.593。

A．47440

B．49120

C．49680

D．49820