Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-The quadratic function $f ( x ) = 0.0040 x ^ { 2 } - 0.43 x + 36.98$ models the median, or average, age, $y$ , at which U.S. men were first married x years after 1900 . In which year was this average age at a minimum? (Round to the nearest year.) What was the average age at first marriage for that year? (Round to the nearest tenth.)

A) 1953,36 years old
B) $1936,48.5$ years old
C) $1954,25.4$ years old
D) $1954,48.5$ years old