Can you handle this

Electricity and Magnetism Level 2

A capacitor is charged to a potential of $10V$ and it is then connected to a voltmeter having internal resistance $1M \Omega$ . After 5 seconds the voltmeter reads $5V$ , What is it's capacitance?

Note- if your answer is $x×10^{-6}$ submit value of $x$ .

none of these choices

3.5

1.5

1.99

1.7

1.4

2.3

1.9