An initial match specification is built and executed- The match executes slower than expected and it is suspected that blocking may be a factor. Which option would be effective in determining if the block sizes are too large? 

Create an investigation routine using the blocking fields for each match pass. 

Review the match specification test results graph to determine blocking results. 

Add disagreement weight to key fields where appropriate to break apart matches. 

Analyze the blocking fields within the match specification to see if there are enough fields.