PHP question

[pabloledesma]

I'm preparing for a review of PHP and I have a question:

 

You PHP script is repeatedly parsing 50KB of data returned from a remote web service into browser-readable HTML.

 

Users complain that the script takes a long time to run. Which of the following measures usually leads to the best results? (Choose 2)

 

a. Install a bytecode cache.

b. Install an SSD drive on the server.

c. Cache the data returned by the web service locally.

d. Update to the latest version of PHP.

 

Please, help me.