Two questions What is true about the transitional epithelium that lines the urinary bladder?

Two questions

What is true about the transitional epithelium that lines the urinary bladder?

a. It allows diffusion of urine into the urinary bladder.

b. it protects the urinary bladder as urine enters.

c. It produces mucus to allow urine to pass easily.

d. It repeatedly stretches and recoils back to its original shape.

What is true about keratinized epithelia?

a. They are tough and water resistant.

b. They secrete serious fluid and mucus fluid.

c. They are found in the thoracic and abdominal cavities.

d. They are good for diffusion and protection