A.該國(guó)的經(jīng)濟(jì)增長(zhǎng)率會(huì)提高10個(gè)百分點(diǎn),即30%-20%=10%
B.該國(guó)的經(jīng)濟(jì)增長(zhǎng)率會(huì)降低10個(gè)百分點(diǎn),即30%-20%=10%
C.該國(guó)的經(jīng)濟(jì)增長(zhǎng)率會(huì)提高2個(gè)百分點(diǎn),即(30%-20%)÷5=2%
D.該國(guó)的經(jīng)濟(jì)增長(zhǎng)率不變