Which of the prime factor decompositions below are common factors of 6930 and 9009 ?

a. 2* 3
b. 3²* 7* 11
c. 2* 3⁴* 5* 7²* 11²* 13
d. 2* 5* 13
e. 2* 3* 5* 7* 11* 13
f. 3²
g. 3* 11