Dustin and Penny are husband and wife and always have lived in Washington. At the time of Dustin's prior death in 2009, he was insured in the amount of $600,000 with Penny as the designated beneficiary. The policy was taken out by Dustin before marriage and the premiums thereon were paid as follows: 30% prior to marriage from Dustin's separate property and 70% after marriage from community funds. As the this policy, Dustin's gross estate includes:
a. $180,000
b. $210,000
c. $300,000
d. $390,000
e. $600,000