99. Given the following OPTIONS statement: libname A 'SAS library reference';libname F
'SAS library reference';options fmtsearch = (A F.X); What is the second location searched
for formats?  
A.F.X  
B.A.FORMATS  
C.WORK.FORMATS  KillTestA00-212  
D.SAS supplied formats  

请问答案为什么是C啊， 为什么不是B(按道理是B)     Work.formats->library.fomats->a.formats->F.x