Suppose you want to double-check if two matrices can be multipled using NumPy for debugging purposes. How would you complete this code fragment by filling in the blanks with the appropiate variables?

import numpy as np
def can_matrices_be_multiplied (matrix1, matrix2):
    rowsMat1, columnsMat1 = matrix1.shape
    rowsMat2, columnsMat2 = matrix2.shape
    if _____ == ______ :
        print('The matrices can be multipled!')
        return True
    else:
        return False