What is the most logical next event?

How to make lemon mousse
Crack 3 whole eggs into a heat-proof bowl.
Add the yolks only of 3 separated eggs.
Place the egg whites into a separate bowl and refrigerate.

OPT:
A). Mix in 1 cup (225 g) of sugar , 2 tsp. ( 10ml) of grated lemon zest , 1/2 cup (4 oz..
B). Peel, peel and slice 4 medium lemons, very large, and place them into the same bowl. Stir well and stir once a time..
C). Mix in 1 to 4 tablespoons (29.6 to 44.6 ml) of sugar and 5 cup (56.4 ml) of water. This will cool down the inside of the liquid Whisk in ice and pour over the cooled mixture except for the 3 eggs..
D). Combine the sugar and flour in the egg whites. Put this mixture into a microwave-safe bowl and set the microwave to a low setting..
A).