Are these two tests my best bet for my next 6 credits?

[mistae]

I have 6 more credits to earn in any area. I was thinking about taking the Tech Writing DSST because I've heard it's a breeze (I don't understand why the essay is "optional" though. Can someone explain that to me?).

My other 3 credits I was thinking about taking the intro to business DSST for because according to an earlier post, there is a respectable percentage of people who pass it.

Would these two be the easiest to take (least study time- only because I'm pressed for time, not because I'm a slacker. )?

I've already taken and passed:
English Comp CLEP
Freshman Comp CLEP
Analyzing Lit CLEP
US History 2 CLEP
Here's to Your Health DSST

Thanks!!