Ms. Quasimodo has the utility function U ( x , m ) 100 x + x ^2 / 2 + m , where x is her consumption of earplugs and m is money left over to spend on other stuff . If she has $ 10,000 to spend on earplugs and other stuff and if the price of earplugs rises from $ 50 to $ 95 , then her net consumer 's surplus

a) falls by 1237.50

b) falls by 3237.50

c) falls by 225

d) increases by 618.75

e) increases by 2,475