Use the substitution u$=($x$4+3$x$2+5)$u$=($x$4+3$x$2+5)$ to evaluate the integral $(4$x$3+6$x$)$cos$($x$4+3$x$2+5)$dx$(4$x$3+6$x$)$cos$($x$4+3$x$2+5)$dx$.$

Select one:

a$.$

cos$2($x$4+3$x$2+5)2+$Ccos$2($x$4+3$x$2+5)2+$C

b$.$

$$sin$($x$4+3$x$2+5)+$C$$sin$($x$4+3$x$2+5)+$C

c$.$

sin$2($x$4+3$x$2+5)2+$Csin$2($x$4+3$x$2+5)2+$C

d$.$

sin$($x$4+3$x$2+5)+$C