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