The following bar chart shows the runs given and overs bowled by a bowler in 6 different matches.
$$Economy rate =\frac{Runs given}{Overs bowled}$$

What will be the economy rate of the bowler for all the 6 matches taken together? [Give your answer correct to 2 decimal places.]

A

7.22

B

5.46

C

6.93

D

6.10