A student solves the equation 12x 91−−−−−−−√3=7 . The table shows the student’s work. StepEquation Given12x 91−−−−−−−√3=7 1 ? 2 12x 91=343 3 12x=252 Solution? Which could complete the table and show the solution to the equation correctly? Responses Step 1 : 12x 91−−−−−−−√3=(7)3 Solution: x=21 Step 1 : 12 x 91 3 = ( 7 ) 3 Solution: x = 21 Step 1 : 12x 91−−−−−−−√3=(7)3 Solution: x=240 Step 1 : 12 x 91 3 = ( 7 ) 3 Solution: x = 240 Step 1 : (12x 91−−−−−−−√3)3=(7)3 Solution: x=21 Step 1 : ( 12 x 91 3 ) 3 = ( 7 ) 3 Solution: x = 21 Step 1 : (12x 91−−−−−−−√3)3=(7)3 Solution: x=240