12.计算1÷4×(-25)×(-6)×$\frac{1}{6}$的结果是( )
0 309567 309575 309581 309585 309591 309593 309597 309603 309605 309611 309617 309621 309623 309627 309633 309635 309641 309645 309647 309651 309653 309657 309659 309661 309662 309663 309665 309666 309667 309669 309671 309675 309677 309681 309683 309687 309693 309695 309701 309705 309707 309711 309717 309723 309725 309731 309735 309737 309743 309747 309753 309761 366461
| A. | $\frac{1}{100}$ | B. | -$\frac{1}{100}$ | C. | $\frac{25}{144}$ | D. | $\frac{25}{4}$ |