The ages of the members of four teams are summarized below. Answer the questions about them. Team A: The mean age is 38 and the range of ages is 21. Team B: The mean age is 40 and the range of ages is 24. Team C: The mean age is 41 and the range of ages is 28. Team D: The mean age is 37 and the range of ages is 29. (a ) Based on the information above, which team has the oldest members on average? Team A O Team B Team C O Team D (b) Based on the information above, which team's ages have the least variability? O Team A O Team B O Team C O Team D