I'm having trouble with understanding the kiddie law tax calcutions for these 2 problems. I would like help with them.

9. Sneha, age 14, is a dependent of her parents. Her only source of income in 2020 is $6,000 of interest income on bonds given her by her grandparents. Sneha's marginal tax rate is 10%, and her parent's marginal tax rate is 35%. Sneha's tax for 2020 is (kiddie tax rules for 2020) A) $1,200. B) $1,440. C) $2,200 D) $6,000. 10. Jesus, age 14, is a dependent of his parents. During 2020, Jesus' earned income from wages is $4,000 and Jesus received $3,000 of interest income. The parent's marginal rate is 24% and Jesus' marginal rate is 10%. Jesus' tax is (kiddie tax rules for 2020) A) $285. B) $377. C) $563. D) None of the above