The Supreme Court's Decision in King V

The Supreme Court's decision in King v. Burwell was significant because it

A) upheld the federal government's ability under the Affordable Care Act to provide subsidies to people using the federal health insurance exchange.
B) struck down the federal government's ability under the Affordable Care Act to provide subsidies to people using the federal health insurance exchange.
C) required employers to provide health insurance programs that cover all forms of contraception, including birth control methods they opposed on religious grounds.
D) allowed state governments to opt out of the Affordable Care Act's Medicaid expansion without fear of losing their existing Medicaid funds.