The underlined word "conducive" (Line 3, Par

A．study the knowledge of psychology
B．obtain data on the motives that tend to encourage or discourage consumers to spend money
C．carry out investigations on consumers behavior and obtain data on consumers' incomes and money spending motives
D．do researches in consumer psychology in different countries

A．people with rising incomes tend to borrow most.
B．people will resist to purchase things when price increases.
C．people with declining incomes tend to borrow most.
D．rising prices may make people put off their purchase of certain things.