# The mean and median of 5 observations 9 and 8 respectively :

The mean and median of 5 observations 9 and 8 respectively. If 1 is subtracted from each observation, then the new mean and the new median will respectively be

(a) 8 and 7

(b) 9 and 7

(c) 8 and 9

(d) Cannot be determined due to insufficient data.