What is the correct formula for B$9?$

$=$YIELD$(B2,B3,B4,B\frac{9}{B}6*100,B\frac{6}{B}6*100,B6,B7)$

$=$YIELD$(B2,B3,B4,B\frac{8}{10},100,B6,B7)$

$=$YIELD$(B2,B3,B4,B8*10,B\frac{6}{B}6*100,B6,B7)$

$=$RATE$(YEARFRAC(B2,B3,B7)*B6,B4*B\frac{5}{B}6,-B8,B5)$