If the LCM and HCF of two expressions are (x² + 11x + 28)(x + 3) and (x + 3) respectively and one of the expressions is x² + 7x + 12, find the other.
a) x² + 10x + 24
b) x² + 10x + 28
c) x² + 10x + 32
d) x² + 11x + 28