Maureen is keeping track of the mean of her quiz scores this semester. If Maureen scores an 11 on the next quiz, her mean will increase by 1 . If she scores an 11 on each of the next three quizzes, her mean will increase by 2 . What is the mean of her quiz scores currently?
Answer Choices
A. 4
B. 5
C. 6
D. 7
E. 8