0.5g of a mixture of $K_2CO_3$ and $Li_2CO_3$ required 30ml of 0.25N HCl solution for neutralization.What is % composition mixture ?

Question

$(a)\;80\%,20\%\qquad(b)\;90\%,10\%\qquad(c)\;91\%,9\%\qquad(d)\;96\%,4\%$