Given below are four jumbled sentences. Pick the option that gives their correct order. 
A. Spoon the brownie batter into the prepared pan and bake for 30 to 40 minutes.
B. Now beat in eggs and vanilla extract, and add cocoa and mix until well combined. 
C. To make chocolate chip brownies mix together melted butter, brown sugar and white sugar using a wooden spoon or hand mixer.
D. Next, stir in flour and salt and mix until flour is incorporated, and then add some chocolate chips.