What is the correct APA format for a parenthetical citation with two different sources from the same author in the same year?

Although employers rank communication as the most important skill needed in all industries and occupations, they say strong writing, speaking, and interpersonal skills are hard to find in prospective hires $($Jansons$,2019-1$; Jansons, $2019-2).$

Although employers rank communication as the most important skill needed in all industries and occupations, they say strong writing, speaking, and interpersonal skills are hard to find in prospective hires $($Jansons$,2019-$a; Jansons, $2019-$b$).$

Although employers rank communication as the most important skill needed in all industries and occupations, they say strong writing, speaking, and interpersonal skills are hard to find in prospective hires $($Jansons$,2019$a; Jansons, $2019$b$).$

Although employers rank communication as the most important skill needed in all industries and occupations, they say strong writing, speaking, and interpersonal skills are hard to find in prospective hires $($Jansons$,2019$; Jansons, $2019).$