user: Question: How many different numbers of B shares does Handelsbanken fonder have?
Columns: ['shareholder name', 'A shares', 'B shares', '% of capital', '% of votes']
Types: ['text', 'real', 'real', 'text', 'text']
Sample row: ['Volkswagen Aktiengesellschaft *', 306232239.0, 59037822.0, '45.66', '70.94']
SQL:

assistant: SELECT COUNT("B shares") FROM "Table" WHERE "shareholder name" = 'Handelsbanken fonder';