Mr. and Mrs. Nabulsi are 44 and 41 years old, respectively. They have two children, 14 and 16 years old. They are successful and highly paid professionals. They have two primary investment objectives, retirement and providing for their two children's education. They plan to retire when they turn 65 years old. Their liquidity constraint is best described by which of the following phrases? Since both of them are highly paid professionals, they have no significant concerns to address in their investor policy statement. Their IPS should address the expected payments for their children's education, but need not account for it in the asset allocation. Their IPS should address the expected payments for their children's education and account for it in the asset allocation