If an IMF member wants to solve structural problems in its macro

If an IMF member wants to solve structural problems in its macro-economy.
A、The IMF can lend money to it by a stand-by agreement
B、The extend fund facility arrangement can help it
C、The PRGF arrangement will be suitable
D、The IMF can lend money to it either on a short-term or a medium-term basis
【正确答案】：B