Which of the Following Accurately Describes the Use of Tree

Which of the following accurately describes the use of tree rings for studying past climates (dendroclimatology) ?

A) The width of annual tree rings indicates the climatic conditions;wider rings suggest favorable conditions,whereas narrower rings suggest harsher conditions.
B) Because most trees only live 60 to 100 years,dendrochronology can only serve as a climate record for recent history and are primarily used to supplement instrument data.
C) Tree ring analysis is best suited for short-lived species because it enables scientists to quickly and easily correlate tree ring growth to documented climatic conditions.
D) Dendrochronology is primarily used in the tropical regions,where one can easily correlate a tree species' age with the climatic conditions there.
E) The age of trees can be determined by tree ring analysis.By establishing the age of long-lived trees,one can determine the climate conditions of the area the year the tree sprouted.