What mass of potassium chloride, a salt substitute often used by heart patients, can be produced...

What mass of potassium chloride, a salt substitute often used by heart patients, can be produced directly from {eq}5.2 \ g {/eq} potassium and {eq}7.9 \ g {/eq} chlorine ?

{eq}2 K + Cl_2 \longrightarrow 2 KCl {/eq}

(a) {eq}5.2 \ g \ KCl {/eq}

(b) {eq}4.9 \ g \ KCl {/eq}

(c) {eq}9.9 \ g \ KCl {/eq}

(d) {eq}10.1 \ g \ KCl. {/eq}