Which of the following is correct regarding the assignment of a right?Question $15$ Answera.The obligor is entitled to performance from the assignor.b$.$The obligor cannot raise personal defenses against the assignee.c$.$In the unconditional assignment of a contract right, the assignor retains all his rights.d$.$In an unconditional assignment, the assignor loses the right to sue the obligor directly for nonperformance.