Inherit multiple interfaces with conflicting method names

What happens if you inherit multiple interfaces and they have conflicting method names?

interface IA
{
void sing(string song);
}

interface IB
{
void sing(string prayer);
}

Describe the implementation of the following class

class singer: IA, IB

How can I declare different methods for both interfaces and call them differently at runtime?

look for this code

interface IA
{
void sing(string song);
}

interface IB
{
void sing(string prayer);
}

class singer: IA, IB
{
void IA.sing(string song)
{
Console.WriteLine("From interface IA "+song);
}

void IB.sing(string song)
{
Console.WriteLine("From interface IB "+song);
}

}