4. Susie bought 4 muffins and 3 bananas, Calvin spent twice the amount to buy 2 muffins and 16 bananas. Then the unit price of a muffin is ( ) times the unit price of a banana.
(A) $\frac{3}{2}$
(B) $\frac{5}{3}$
(C) $\frac{7}{4}$
(D) 2
(E) $\frac{13}{4}$
4. B.

Let the price of a pancake and a banana be $x$ yuan per piece and $y$ yuan per one, respectively. Then $2(4 x+3 y)=2 x+16 y \Rightarrow x=\frac{5}{3} y$.