MARCYWUUZ MARCYWUUZ Today at 3:29 AM Mathematics Answered Which model shows two equal expressions when a = 4? A. a + 1 + 1 + 1 + 1 = 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 B. a + a + a + a = 1 C. a + a + a + a = 1 + 1 + 1 + 1 D. a + a = 1 + 1 + 1 + 1 + 1 + 1