Which of the following are in Agsthayamala Biosphere Reserve?
a. Neyyar, Peppara and Shendurney Wildlife Sanctuaries: and Kalakad Mundanthurai Tiger Reserve
b. Mudumalai, Sathyamangalam and Wayanad Wildlife Sanctuaries; and Silent Valley National Park
c. Kaundinya Gundla Brahmeswaram and Papikonda Wildlife Sanctuaries; and Mukurthi National Park
d. Kawal and Sri Venkateshwara Wildlife Sanctuaries and Nagarjunasagar-Srisailam Tiger Reserve