John Made $3,400,000 in Taxable Gifts Prior to His Death

John made $3,400,000 in taxable gifts prior to his death at the beginning of 2015.His wife,Lola,is the executor of John's estate,and made taxable gifts of $800,000 prior to 2015.What is the maximum amount of taxable lifetime gifts that Lola can make in 2015 before she will have to begin paying a gift tax?

A) $10,860,000
B) $6,660,000
C) $5,430,000
D) $4,630,000