Given the following instruction sequence, AND X10, X2, X3 SUB X20, X10, X5 (a) Without forwarding technique, how many bubbles need to be inserted to avoid data hazard? (b) With the forwarding technique, how many bubbles are needed? (c) Repeat the question in (b) for the following instruction sequence. LDUR X10, [X2, #800] ADD X20, X10, X11