The instructions Add R1,R2,R3 Sub R2,R7,R3 And R5, R1,R6 cause data hazards that are: Select one: a. RAW and WAR and RAW b. WAR and RAW c. WAW and WAW d. WAR and WAR e. RAW and RAW At start of program, cache always causes miss. To solve this problem, we can Select one: a. increase number of blocks in cache b. none c. adding secondary cache d. increase cache size e. increase block size