AMC8 1994 Problem 2

Past Contests AMC8 AMC 8 - 1994
1

\dfrac{1}{10}+\dfrac{2}{10}+\dfrac{3}{10}+\dfrac{4}{10}+\dfrac{5}{10}+\dfrac{6}{10}+\dfrac{7}{10}+\dfrac{8}{10}+\dfrac{9}{10}+\dfrac{55}{10}=

Answer Choices
A. 4 \dfrac{1}{2}
B. 6.4
C. 9
D. 10
E. 11