F5 physics MC (electrostatics)

1. A student performed the following steps in charging a sphere.
step 1: Put an uncharged metal sphere X close to a positively charged sphere connected to a Van de Graff generator.
step2: With the presence of the positively charged sphere, she touched the metal sphere X once.
Step3: put the two spheres in contact for a while.
What will be resulted for metal sphere X?
A. Uncharged
B. Positively charged
C. Negatively charged
D. Uncertain of its charge

Clear explanation are needed please.