Using Partial Fraction Decomposition technique, the value of the unknown constants: , and for the following Laplace transform are:

()=(9²+12+9)/(+3)(-1)

Select one:
a. =-3,=5.5 and =7.5
b. =-3,=4.5 and =7.5
c. =-3,=4.5 and =5.7
d. =3,=4.5 and =7.5