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L $(r) = 10(05)\" A sample of strontium-90 will radioactively decay to half the original quantity in approximately 29 years. The function 8 above models the amount of strontium-90. in grams, that remains 1 years after a Ill-gram sample starts to decay. Which of the following is the best interpretation of the number 0.5 in the function? A) The approximate number of years it would take for 5 grams of strontium-90 to remain in the sample B) The proportion of strontium-90 that remains after approximately 29 years C} The number of grams of strontium-90 in the sample that will decay approximately every 29 years D) The numb-er ofgrams of strontium-90 by which the sample will be reduced each year over approximately 29 years