(I) When the value of the euro changes from $1.33/1€ to $1.50/1€, then the dollar has _________.
(II) When the value of the euro changes from 137¥/1€ to 140¥/1€, then the euro has _________.
a) appreciated; appreciated
b) depreciated; appreciated
c) appreciated; depreciated
d) depreciated; depreciated