As Lena's support worker, which two tasks should you encourage her to perform at the end of each day to meet the basic standards of oral hygiene?
a. Flossing and eating a balanced diet
b. Brushing teeth twice a day and flossing daily
c. Brushing each tooth and eating a balanced diet
d. Eating a balanced diet and brushing teeth once a day
e. Flossing daily and brushing tongue twice a day