I'm trying to change the background color of dynamic html elements (span) when user clicks them.

function showQuestion(){
    for(let i = 0; i < QuesPartA.length; i++){
      $(".questionBox").append('<div class="Question">Number '+ parseInt(i+1) +'</div>');
      QuesPartA[i]['option'].forEach(option => {
          $(".questionBox").append('<span class="pilihan">'+option +' </span><br>');  
      });
  } 

$(".secondBox").append('<a href="Listening Part A.html" class="btnToPartB">Continue to Part B</a>');
  };

$(".questionBox").on("click", "span.pilihan", function() {
  Array.from(document.getElementsByClassName("pilihan"))
  .forEach((element) => element.style.backgroundColor = "red");
    });

However, I want only the one clicked that changes color, not all span.pilihan, but my code above change the color off all to be red.

Any idea?