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(i) (a) is made of single thin layer of flattened cells with regular boundaries.
(ii) (b) is commanly found in ducts of glands & nephrons.
(iii) (a) is found in walls of blood vessels and air sacs of heart and are involved in a function like diffusion boundaries
(iv) Both (a) & (b) are included under simple
epithelium.
Choose the option with correct statement