Where will you look for the sporozoites of the malarial parasite?

Question

$\begin{array}{1 1} \text{a. RBCs of humans suffering from malaria} \\ \text{b. Saliva of the infected female anopheles mosquito} \\ \text{c. Saliva of the infected female culex mosquito} \\ \text{d. Spleen of infected humans} \end{array} $