You have the following known facts: smoking causes accumulation of materials in the lungs, thereby decreasing oxygen-absorbing capability of the lungs. long-term smoking causes more accumulation of materials in the lungs. decreased lung capacity increases the workload of the heart. which of the following hypotheses can you make from these observations?

a. stopping smoking eliminates heart problems within two years.
b. stopping smoking eliminates lung problems within two years.
c. new smokers have poorer heart health than long-term smokers.
d. long-term smokers have poorer heart health than non-smokers.
e. people who never smoke will never develop lung problems.