A student scored an average of 70 marks in 3 subjects: Physics, Chemistry and Mathematics. If the average marks in Physics and Mathematics is 90 and that in Physics and Chemistry is 70, what are the marks in Physics?	Select the correct option:
A) 130
B) 120
C) 110
D) 180
E) 150
Given M + P + C = 70 * 3= 
<gadget id="calculator">70 * 3</gadget>
<output>210</output>
210 --- (1)   M + P= 90 * 2= 
<gadget id="calculator">90 * 2</gadget>
<output>180</output>
180 --- (2)   P + C= 70 * 2= 
<gadget id="calculator">70 * 2</gadget>
<output>140</output>
140 --- (3)   Where M, P and C are marks obtained by the student in Mathematics, Physics and Chemistry.   P= (2) + (3) - (1) = 180 + 140 - 210= 
<gadget id="calculator">180 + 140 - 210</gadget>
<output>110</output>
110   ANSWER:110
<result>C</result>
A student scored an average of 70 marks in 3 subjects: Physics, Chemistry and Mathematics. If the average marks in Physics and Mathematics is 90 and that in Physics and Chemistry is 70, what are the marks in Physics?