Which of the following is an acceptable structure for (R) -5-bromohept-2-yne. 
Definitions:
Economic Efficiency
A situation in which all resources are allocated in a way that maximizes total benefit or output with minimal waste.
Poverty Rate
The proportion of a population living below the national poverty line, indicating the level of economic deprivation.
Married-Couple Families
Families consisting of a married couple and their children, if any, living together as a unit.
Poverty Rate
A measure indicating the percentage of the population living below the nationally established poverty line, reflecting the proportion of society facing severe economic hardship.
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