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ISRO 2007- ECE Probability

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A bag contains eight white and six red marbles. The probability of drawing two marbles of same colour is

a) $8c_2$ .$6c_2$ / $14c_2$  

b) $8c_2$ /$14c_2$ + $6c_2$ /$14c_2$

c) $8c_2$ .$6c_2$ /$14c_2$.$14c_2$

d)$8c_2$​​​​​​​ /$14c_2$​​​​​​​​​​​​​​ + $6c_2$​​​​​​​ /$12c_2$
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