The given bar chart, shows the sales of books (in thousand number) from six branches of a publishing company during two consecutive years 2000 and 2001.

In the given bar-chart, the ratio of total sales of all branches (in thousand numbers) for the year 2000 to 2001 is:

A

55 : 48

B

7 : 11

C

45 : 58

D

48 : 55