The heights of 11 students of the same age-group are 150 cm, 153 cm, 151 cm, 153 cm, 154 cm, 160 cm, 153 cm, 161 cm, 159 cm, 150, cm, 162 cm. The statement that holds true for the given observation is
a mean not equal to median=mode

b mean=median not equal to mode
c mean= median = mode
d mean not equal to median not equal to mode