[单选题]
Suppose that the build-7ujpl76cu *nc;p,0n e hz(krpupkof*v:zz ,.a a2ubv e2 of fatty tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart havv o 2z.uae*a bf:k,2zve to be increased to maintain a constant blood flow?
