Kendra is serving two tables at the diner where she works. At the first table, the bill was $37.40, and she received 15% of the bill amount as a tip. At the second table, the bill was $34.50, and the tip was 18% of the bill amount. At which table did Kendra receive the bigger tip, and how much more did she get?
A. first table; $1.56
B. first table; $2.90
C. second table; $0.60
D. second table; $6.21