Which sentences use commas correctly? (Multiple Answers) Select one or more:

a. What employees like best, is the company's flexibility,
b. Ted, who's very experienced, will be the project director,
c. The team needs clear, succinct information,
d. Customers are complaining, so we need to take action
e. The report, on the team's performance, is ready,
f. The meeting, which started at 10, was very productive.
g. Audrey, Ronan, and Tim will start tomorrow,
h. The CEO devised some effective team, management strategies.