What is the product? the fraction with numerator 4 n and denominator 4 n minus 4 times the fraction with numerator n minus 1 and denominator n plus 1
A
the fraction with numerator n and denominator n plus 1B
the fraction with numerator 1 and denominator n plus 1C
the fraction with numerator 4 and denominator n plus 1D
the fraction with numerator 4 n and denominator n plus 1