You are considering the following two mutually exclusive projects. The crossover rate between these two projects is $\_\_\_$ percent and Project $\_\_\_$ should be accepted if the required return is greater than the crossover rate.

Year Project A Project B

$0$$$28,000$$$28,000$

$110,50018,610$

$210,5008,500$

$318,50010,630$

Multiple Choice

$11\mathrm{.}61\%$; A

$11\mathrm{.}61\%$; B

$18\mathrm{.}87\%$; A

$17\mathrm{.}39\%$; A