If a 1 $\mathrm { M } \Omega$ Resistor, 0 $\mathrm { M } \Omega$

Multiple Choice

If a 1 $\mathrm { M } \Omega$ resistor, 0.47 $\mathrm { M } \Omega$ resistor and 0.5 $\mathrm { M } \Omega$ resistor are connected in parallel across an 18 V source, what is the total current if the 1 $\mathrm { M } \Omega$ resistor opens?

A) 74.3 $\mu A$
B) 74.3 mA
C) 92.3 mA
D) 92.3 $\mu A$