In the following table consisting of 100 unit squares numbered from 1 to 100, some squares will be painted.
| 1 | 2 | 3 | $\ldots$ | 10 |
| 11 | 12 | 13 | $\ldots$ | 20 |
| . | . | . | | . |
| . | . | . | | . |
| . | . | . | | . |
| 91 | 92 | 93 | .. | 100 |
Squares with even numbers are painted yellow, squares that are multiples of 3 are painted red, and squares that are multiples of 5 are painted blue.
For a square to be orange, it must be painted only yellow and red.
Accordingly, how many unit squares in the table are orange?
A) 8
B) 12
C) 13
D) 15
E) 18