Paige is a commissioned Navy officer and a lifelong Oregon resident. In 2021, she earned $8,400 in nontaxable combat pay while stationed overseas in a combat zone. She earned an additional $9,800 while stationed in South Korea. In May, she was transferred back to Oregon where she earned $29,000. Paige included $38,800 of her military pay in her federal AGI. How much is Paige's military pay subtraction on her Oregon return?

$9,800

$15,800

$18,200

$38,800