A Single Pulse of a Laser Yields an Average of 5.00

Multiple Choice

A single pulse of a laser yields an average of 5.00 * 10¹⁸ photons with $\lambda$ = 633 nm. If melting ice to water at 0°C requires 6.01 kJ/mol, what is the fewest number of laser pulses need to melt 10.0 g of ice?

A) 3830
B) 3340
C) 38300
D) 2120
E) 212