Kimberly Gave 100 Shares of Stock to Her 24-Year-Old Son,Brandon

Kimberly gave 100 shares of stock to her 24-year-old son,Brandon.Kimberly purchased the stock 9 months ago for $10 per share.On the gift date,the stock was worth $40 per share.Two months later,Brandon sells the 100 shares of stock for $60 per share.Kimberly and Brandon are in the 33 percent and 10 percent marginal tax brackets,respectively.How much family tax savings is achieved through this transaction?

A) $500
B) $920
C) $1,150
D) $1,380