Amanda Purchased a Home for $1,000,000 in 2003 She Paid

Amanda purchased a home for $1,000,000 in 2003 She paid $200,000 cash and borrowed the remaining $800,000. This is Amanda's only residence. Assume that in 2014 when the home had appreciated to $1,500,000 and the remaining mortgage was $600,000, interest rates declined and Amanda refinanced her home. She borrowed $1,000,000 at the time of the refinancing. What is her total amount of qualifying home-related debt for tax purposes?

A) $600,000
B) $700,000
C) $1,000,000
D) $1,100,000