a) Using the 2" 2 n rule, construct a frequency distribution for these data. Select the correct choice below and fill in the answer boxes to complete your choice. OB. Credit Card Balances Frequency Credit Card Balances Frequency $0 to less than $1,000 13 $0 to less than $1,200 $1,000 to less than $2,000 $1,200 to less than $2,400 $2,000 to less than $3,000 $2,400 to less than $3,600 $3,000 to less than $4,000 $3,600 to less than $4,800 $4,000 to less than $5,000 ON W N $4,800 to less than $6,000 $5,000 to less than $6,000 b) Using the results from part a, calculate the relative frequencies for each class. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to the nearest thousandth as needed.) A. O B. Credit Card Balances Relative Relative Frequency Credit Card Balances Frequency $0 to less than $1,200 $0 to less than $1,000 $1,200 to less than $2,400 $1,000 to less than $2,000 $2,400 to less than $3,600 $2,000 to less than $3,000 $3,600 to less than $4,800 $3,000 to less than $4,000 $4,800 to less than $6,000 $4,000 to less than $5,000 $5,000 to less than $6,000