Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Class | Railway number(s) | Quantity | Year(s) of manufacture | Axle arrangement ( UIC ) |
| --- | --- | --- | --- | --- |
| None | I–II | 2.0 | 1898 | Bo′2′ g2t |
| None | III | 1.0 | 1900 | Bo g2t |
| MC | 3050, 5130 | 2.0 | 1900 | A1A g2t |
| MBCC | 8856–8859 | 4.0 | 1900–1902 | Bo′2′ g2t |
| MBCL | I | 1.0 | 1903 | A1 n2v |
Question:
what is the class when the quantity is 4?
Answer:
MBCC