Let $$M, M_d, M_o, Q_1, Q_2, Q_3$$ be the mean, median, mode and quartile points for different data points. Skewness is negative if:

A

$$Q_3 + Q_1 > 2M_d$$

B

$$Q_3 + Q_1 > M_d$$

C

$$M > M_o$$

D

$$M > M_d$$