Heat transfer: Assume two blocks, A and B, that are connected by a third block, C." Question 8 options: a) An increase in the thermal conductivity of block C would result in an increase in the driving force for heat transfer between block A and block B. b) The rate of heat transfer between block A and block B is proportional to the difference in temperature between block A and block B. c) An increase in the thickness of block C (increased distance between block A and block B) would result in a decrease in the driving force for heat transfer between block A and block B. d) "both a) and b) are correct, and c) is incorrect." e) "a), b) and c) are all correct