Review Video Cae 4: Potbelly Sandwich works Grows through “Quirky” Marketing located at:http://ezto.s3.mheducation.com/Media/Connect_Production/bne/OCL_Assets/Perreault_19e_0078028981/Video_Cases/Potbelly.m4vPotbelly Sandwich Works, Inc. is a chain sandwich shop competing in the quick serve segment of the restaurant industry, appealing to young urban professionals. Identify their core strategy elementsx (four P’s). What are several of the business environment threats to Pot Belly? How might they overcome these?