Which placement of grouping symbols in the expression gives it a value of 14?     6 • 4 – 4 + 9 – 3   A. 6 • (4 – 4 + 9) – 3   B. 6 • 4 – [4 + (9 – 3)]   C. (6 • 4 – 4) + (9 – 3)   D. 6 • [(4 – 4 + 9) – 3]