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Which of the following act as a channel of transmission of blood to the heart in the human body?
A. Arteries
B. Muscle fibres
C. Nerves
D. Veins

D. Veins

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Which launch vehicle is capable of placing around 1540 kg of INSAT class of satellites in geosynch-ronous transfer orbit of earth? A. SLV-S B. PSLV C. ASLV D. GSLV	Which of the following of the members of OPEC (Organisation of Petroleum Exporting Countries)? A. Algeria, Indonesia, Iran, Iraq, Kuwait B. Libya, United Arab Emirates, Nigeria C. Qatar, Saudi Arabia, Venezuela D. All of the above