Alpha Corporation's Adjusted Taxable Income Is $100,000 for 2017 and $200,000

Alpha Corporation's adjusted taxable income is $100,000 for 2017 and $200,000 for 2018. Alpha makes charitable contributions of $15,000 in 2017 and $19,000 in 2018. What are Alpha's charitable contribution deductions in determining its taxable income for 2017 and 2018, respectively?

A) $10,000 and $19,000
B) $10,000 and $20,000
C) $15,000 and $19,000
D) $15,000 and $20,000