Answer:
B
Step-by-step explanation:
6% of her salary is  .06 * 50000 = 3000  <===== matched 100%
  from 6- 12% is another 3000 <=====matched 50% =  1500
3000 + 1500 = 4500 dollars matched
(she put in 6000 and her employer put in 4500 = 10500 total)