I believe it is 1. But in the facebook documentation it says, batch requests api calls are calculated as if they were many individual calls. Since field expansion is also a "batch request", I am confused how they calculate.
I believe the number of calls will either be one of the following :
1. 1 - line of code
2. 100 - number of friends
3. 100 * (1 + 1) = 200 - 1 each for name and books
Can you please tell me how to calculate?