A bag contains 6 blue, 4 red, 3 yellow and 2 green marbles. If 4 marbles are picked up at random, what is the probability that atleast one of them is red?

A

$$\frac{67}{91}$$

B

$$\frac{68}{91}$$

C

$$\frac{69}{91}$$

D

$$\frac{71}{91}$$