CHALLENGE 12.4.1: Loops ACTIVITY Start Write a while loop that multiplies userNum by 2 while userNum is less than 50, displaying the result after each multiplication. Ex For userNum = 4, output is: 8 16 32 64 1 var userNum = 4; // Code will be tested with values : 4, 10 and 60 3 * Your solution goes here */ 4