AUD = Australian Dollar, SF = Swiss Frank

S^b($/AUD) = 0.69, S^a($/AUD) = 0.71,

S^b(AUD/$) = 1.408 S^a(AUD/$) = 1.449

S^b($/SF) = 1.06 S^a($/SF) = 1.08

S^b(SF/$) = 0.926 S^a(SF/$) = 0.943

Then, what is S^b(AUD/SF) ?

		1.564
		1.492
		0.999
		0.639

2.

AUD = Australian Dollar, SF = Swiss Frank

S^b($/AUD) = 0.69, S^a($/AUD) = 0.71,

S^b(AUD/$) = 1.408 S^a(AUD/$) = 1.449

S^b($/SF) = 1.06 S^a($/SF) = 1.08

S^b(SF/$) = 0.926 S^a(SF/$) = 0.943

Then, what is S^a(AUD/SF) ?

		0.999
		1.521
		1.001
		1.565