Which explanation correctly analyzes the difference between an irrational number and a rational number? The expression V25 - V21 can be rewritten as -5\\21. Since the exact value of v 21 cannot be found, the difference is irrational. The expression \\25 - v21 can be rewritten as 5 - v21. Since the value of v21 ~ 4.59, the difference is rational. The expression \\25 - v21 can be rewritten as v25 - 21 or v4. Since v4 - 2, the difference is rational. The expression v25 - v 21 can be rewritten as 5 - v 21. Since the exact value of v 21 cannot be found, the difference is irrational