Which pair of species has same percentage of carbon?

Question

$\begin{array}{1 1}(a)\;CH_3COOH\;and\;C_6H_{12}O_6\\(b)\;CH_3COOH\;and\;C_2H_5OH\\(c)\;HCOOCH_3\;and\;C_{12}H_{22}O_{11}\\(d)\;C_6H_{12}O_6\;and\;C_{12}H_{22}O_{11}\end{array}$