Will learning Objective-C before C help you pick up C later on?

I'm a novice programmer looking to build my own iOS app. I'm hearing a lot of mixed responses on how it may or may not be necessary to learn C before taking on Objective-C.

I'm leaning towards learning Objective-C first considering I can always look back into the C (I'm using Big Nerd Ranch Guide for Objective-C) for some concepts like structs, arrays, etc.

I'm open to hearing any advice on what any of you may think!